Home / 28,472.70-42,686.94-18,456.30

Finding the Fourth Proportional to 28,472.70, 42,686.94 and 18,456.30

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Solution

The fourth proportional to 28,472.70, 42,686.94 and 18,456.30 is: 27,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.70 : 42,686.94 = 18,456.30 : x
  2. Step 2: Convert to fraction form
    28,472.70/42,686.94 = 18,456.30/x
  3. Step 3: Cross multiply
    28,472.70x = 42,686.94 × 18,456.30
  4. Step 4: Simplify right side
    28,472.70x = 787,842,970.72
  5. Step 5: Solve for x
    x = 787,842,970.72/28,472.70
  6. Step 6: Final answer
    x = 27,670.12

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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.