Home / 28,475.89-42,712.76-8,753.93

Finding the Fourth Proportional to 28,475.89, 42,712.76 and 8,753.93

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Solution

The fourth proportional to 28,475.89, 42,712.76 and 8,753.93 is: 13,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.89 : 42,712.76 = 8,753.93 : x
  2. Step 2: Convert to fraction form
    28,475.89/42,712.76 = 8,753.93/x
  3. Step 3: Cross multiply
    28,475.89x = 42,712.76 × 8,753.93
  4. Step 4: Simplify right side
    28,475.89x = 373,904,511.15
  5. Step 5: Solve for x
    x = 373,904,511.15/28,475.89
  6. Step 6: Final answer
    x = 13,130.56

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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.