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Finding the Fourth Proportional to 28,502.41, 42,753.62 and 7,725.91

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Solution

The fourth proportional to 28,502.41, 42,753.62 and 7,725.91 is: 11,588.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.41 : 42,753.62 = 7,725.91 : x
  2. Step 2: Convert to fraction form
    28,502.41/42,753.62 = 7,725.91/x
  3. Step 3: Cross multiply
    28,502.41x = 42,753.62 × 7,725.91
  4. Step 4: Simplify right side
    28,502.41x = 330,310,581.66
  5. Step 5: Solve for x
    x = 330,310,581.66/28,502.41
  6. Step 6: Final answer
    x = 11,588.87

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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.