Home / 38,730.08-58,089.62-12,431.42

Finding the Fourth Proportional to 38,730.08, 58,089.62 and 12,431.42

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Solution

The fourth proportional to 38,730.08, 58,089.62 and 12,431.42 is: 18,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,730.08 : 58,089.62 = 12,431.42 : x
  2. Step 2: Convert to fraction form
    38,730.08/58,089.62 = 12,431.42/x
  3. Step 3: Cross multiply
    38,730.08x = 58,089.62 × 12,431.42
  4. Step 4: Simplify right side
    38,730.08x = 722,136,463.86
  5. Step 5: Solve for x
    x = 722,136,463.86/38,730.08
  6. Step 6: Final answer
    x = 18,645.36

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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.