Home / 19,685.15-29,494.85-13,831.28

Finding the Fourth Proportional to 19,685.15, 29,494.85 and 13,831.28

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Solution

The fourth proportional to 19,685.15, 29,494.85 and 13,831.28 is: 20,723.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.15 : 29,494.85 = 13,831.28 : x
  2. Step 2: Convert to fraction form
    19,685.15/29,494.85 = 13,831.28/x
  3. Step 3: Cross multiply
    19,685.15x = 29,494.85 × 13,831.28
  4. Step 4: Simplify right side
    19,685.15x = 407,951,312.28
  5. Step 5: Solve for x
    x = 407,951,312.28/19,685.15
  6. Step 6: Final answer
    x = 20,723.82

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1.5x scale

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.