Home / 26,438.86-39,646.63-12,387.57

Finding the Fourth Proportional to 26,438.86, 39,646.63 and 12,387.57

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Solution

The fourth proportional to 26,438.86, 39,646.63 and 12,387.57 is: 18,575.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,438.86 : 39,646.63 = 12,387.57 : x
  2. Step 2: Convert to fraction form
    26,438.86/39,646.63 = 12,387.57/x
  3. Step 3: Cross multiply
    26,438.86x = 39,646.63 × 12,387.57
  4. Step 4: Simplify right side
    26,438.86x = 491,125,404.39
  5. Step 5: Solve for x
    x = 491,125,404.39/26,438.86
  6. Step 6: Final answer
    x = 18,575.89

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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.