Home / 19,168.47-28,691.95-13,885.65

Finding the Fourth Proportional to 19,168.47, 28,691.95 and 13,885.65

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Solution

The fourth proportional to 19,168.47, 28,691.95 and 13,885.65 is: 20,784.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.47 : 28,691.95 = 13,885.65 : x
  2. Step 2: Convert to fraction form
    19,168.47/28,691.95 = 13,885.65/x
  3. Step 3: Cross multiply
    19,168.47x = 28,691.95 × 13,885.65
  4. Step 4: Simplify right side
    19,168.47x = 398,406,375.52
  5. Step 5: Solve for x
    x = 398,406,375.52/19,168.47
  6. Step 6: Final answer
    x = 20,784.46

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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.