Home / 29,210.26-40,310.13-15,781.51

Finding the Fourth Proportional to 29,210.26, 40,310.13 and 15,781.51

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Solution

The fourth proportional to 29,210.26, 40,310.13 and 15,781.51 is: 21,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,210.26 : 40,310.13 = 15,781.51 : x
  2. Step 2: Convert to fraction form
    29,210.26/40,310.13 = 15,781.51/x
  3. Step 3: Cross multiply
    29,210.26x = 40,310.13 × 15,781.51
  4. Step 4: Simplify right side
    29,210.26x = 636,154,719.70
  5. Step 5: Solve for x
    x = 636,154,719.70/29,210.26
  6. Step 6: Final answer
    x = 21,778.47

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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.