Home / 29,209.66-40,309.27-15,780.87

Finding the Fourth Proportional to 29,209.66, 40,309.27 and 15,780.87

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Solution

The fourth proportional to 29,209.66, 40,309.27 and 15,780.87 is: 21,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,209.66 : 40,309.27 = 15,780.87 : x
  2. Step 2: Convert to fraction form
    29,209.66/40,309.27 = 15,780.87/x
  3. Step 3: Cross multiply
    29,209.66x = 40,309.27 × 15,780.87
  4. Step 4: Simplify right side
    29,209.66x = 636,115,398.98
  5. Step 5: Solve for x
    x = 636,115,398.98/29,209.66
  6. Step 6: Final answer
    x = 21,777.57

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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.