Home / 28,472.14-42,712.30-8,752.36

Finding the Fourth Proportional to 28,472.14, 42,712.30 and 8,752.36

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Solution

The fourth proportional to 28,472.14, 42,712.30 and 8,752.36 is: 13,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.14 : 42,712.30 = 8,752.36 : x
  2. Step 2: Convert to fraction form
    28,472.14/42,712.30 = 8,752.36/x
  3. Step 3: Cross multiply
    28,472.14x = 42,712.30 × 8,752.36
  4. Step 4: Simplify right side
    28,472.14x = 373,833,190.59
  5. Step 5: Solve for x
    x = 373,833,190.59/28,472.14
  6. Step 6: Final answer
    x = 13,129.79

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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.