Home / 31,731.15-47,612.43-15,086.87

Finding the Fourth Proportional to 31,731.15, 47,612.43 and 15,086.87

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Solution

The fourth proportional to 31,731.15, 47,612.43 and 15,086.87 is: 22,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,731.15 : 47,612.43 = 15,086.87 : x
  2. Step 2: Convert to fraction form
    31,731.15/47,612.43 = 15,086.87/x
  3. Step 3: Cross multiply
    31,731.15x = 47,612.43 × 15,086.87
  4. Step 4: Simplify right side
    31,731.15x = 718,322,482.28
  5. Step 5: Solve for x
    x = 718,322,482.28/31,731.15
  6. Step 6: Final answer
    x = 22,637.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.