Home / 31,641.81-47,439.28-19,158.90

Finding the Fourth Proportional to 31,641.81, 47,439.28 and 19,158.90

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Solution

The fourth proportional to 31,641.81, 47,439.28 and 19,158.90 is: 28,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,641.81 : 47,439.28 = 19,158.90 : x
  2. Step 2: Convert to fraction form
    31,641.81/47,439.28 = 19,158.90/x
  3. Step 3: Cross multiply
    31,641.81x = 47,439.28 × 19,158.90
  4. Step 4: Simplify right side
    31,641.81x = 908,884,255.10
  5. Step 5: Solve for x
    x = 908,884,255.10/31,641.81
  6. Step 6: Final answer
    x = 28,724.16

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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.