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Finding the Fourth Proportional to 28,520.66, 42,777.72 and 7,462.74

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Solution

The fourth proportional to 28,520.66, 42,777.72 and 7,462.74 is: 11,193.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.66 : 42,777.72 = 7,462.74 : x
  2. Step 2: Convert to fraction form
    28,520.66/42,777.72 = 7,462.74/x
  3. Step 3: Cross multiply
    28,520.66x = 42,777.72 × 7,462.74
  4. Step 4: Simplify right side
    28,520.66x = 319,239,002.15
  5. Step 5: Solve for x
    x = 319,239,002.15/28,520.66
  6. Step 6: Final answer
    x = 11,193.25

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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.