Home / 38,666.39-57,987.23-12,364.88

Finding the Fourth Proportional to 38,666.39, 57,987.23 and 12,364.88

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Solution

The fourth proportional to 38,666.39, 57,987.23 and 12,364.88 is: 18,543.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,666.39 : 57,987.23 = 12,364.88 : x
  2. Step 2: Convert to fraction form
    38,666.39/57,987.23 = 12,364.88/x
  3. Step 3: Cross multiply
    38,666.39x = 57,987.23 × 12,364.88
  4. Step 4: Simplify right side
    38,666.39x = 717,004,788.72
  5. Step 5: Solve for x
    x = 717,004,788.72/38,666.39
  6. Step 6: Final answer
    x = 18,543.36

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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.