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Finding the Fourth Proportional to 38,703.92, 58,064.08 and 12,427.12

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Solution

The fourth proportional to 38,703.92, 58,064.08 and 12,427.12 is: 18,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,703.92 : 58,064.08 = 12,427.12 : x
  2. Step 2: Convert to fraction form
    38,703.92/58,064.08 = 12,427.12/x
  3. Step 3: Cross multiply
    38,703.92x = 58,064.08 × 12,427.12
  4. Step 4: Simplify right side
    38,703.92x = 721,568,999.53
  5. Step 5: Solve for x
    x = 721,568,999.53/38,703.92
  6. Step 6: Final answer
    x = 18,643.31

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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.