Home / 29,210.34-40,310.22-15,781.56

Finding the Fourth Proportional to 29,210.34, 40,310.22 and 15,781.56

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Solution

The fourth proportional to 29,210.34, 40,310.22 and 15,781.56 is: 21,778.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,210.34 : 40,310.22 = 15,781.56 : x
  2. Step 2: Convert to fraction form
    29,210.34/40,310.22 = 15,781.56/x
  3. Step 3: Cross multiply
    29,210.34x = 40,310.22 × 15,781.56
  4. Step 4: Simplify right side
    29,210.34x = 636,158,155.54
  5. Step 5: Solve for x
    x = 636,158,155.54/29,210.34
  6. Step 6: Final answer
    x = 21,778.53

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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.