Home / 13,029,346.88-17,980,519.88-7,228,128.76

Finding the Fourth Proportional to 13,029,346.88, 17,980,519.88 and 7,228,128.76

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Solution

The fourth proportional to 13,029,346.88, 17,980,519.88 and 7,228,128.76 is: 9,974,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,029,346.88 : 17,980,519.88 = 7,228,128.76 : x
  2. Step 2: Convert to fraction form
    13,029,346.88/17,980,519.88 = 7,228,128.76/x
  3. Step 3: Cross multiply
    13,029,346.88x = 17,980,519.88 × 7,228,128.76
  4. Step 4: Simplify right side
    13,029,346.88x = 129,965,512,864,379.73
  5. Step 5: Solve for x
    x = 129,965,512,864,379.73/13,029,346.88
  6. Step 6: Final answer
    x = 9,974,829.44

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.