Home / 13,309,221.15-18,366,780.51-7,197,649.65

Finding the Fourth Proportional to 13,309,221.15, 18,366,780.51 and 7,197,649.65

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Solution

The fourth proportional to 13,309,221.15, 18,366,780.51 and 7,197,649.65 is: 9,932,786.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309,221.15 : 18,366,780.51 = 7,197,649.65 : x
  2. Step 2: Convert to fraction form
    13,309,221.15/18,366,780.51 = 7,197,649.65/x
  3. Step 3: Cross multiply
    13,309,221.15x = 18,366,780.51 × 7,197,649.65
  4. Step 4: Simplify right side
    13,309,221.15x = 132,197,651,309,428.34
  5. Step 5: Solve for x
    x = 132,197,651,309,428.34/13,309,221.15
  6. Step 6: Final answer
    x = 9,932,786.44

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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.