Home / 13,988.18-19,301.42-8,018.76

Finding the Fourth Proportional to 13,988.18, 19,301.42 and 8,018.76

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Solution

The fourth proportional to 13,988.18, 19,301.42 and 8,018.76 is: 11,064.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.18 : 19,301.42 = 8,018.76 : x
  2. Step 2: Convert to fraction form
    13,988.18/19,301.42 = 8,018.76/x
  3. Step 3: Cross multiply
    13,988.18x = 19,301.42 × 8,018.76
  4. Step 4: Simplify right side
    13,988.18x = 154,773,454.64
  5. Step 5: Solve for x
    x = 154,773,454.64/13,988.18
  6. Step 6: Final answer
    x = 11,064.59

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Double scale
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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.