Home / 28,292.71-42,439.31-8,572.81

Finding the Fourth Proportional to 28,292.71, 42,439.31 and 8,572.81

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Solution

The fourth proportional to 28,292.71, 42,439.31 and 8,572.81 is: 12,859.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.71 : 42,439.31 = 8,572.81 : x
  2. Step 2: Convert to fraction form
    28,292.71/42,439.31 = 8,572.81/x
  3. Step 3: Cross multiply
    28,292.71x = 42,439.31 × 8,572.81
  4. Step 4: Simplify right side
    28,292.71x = 363,824,141.16
  5. Step 5: Solve for x
    x = 363,824,141.16/28,292.71
  6. Step 6: Final answer
    x = 12,859.29

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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.