Home / 19,121.55-28,657.89-15,425.52

Finding the Fourth Proportional to 19,121.55, 28,657.89 and 15,425.52

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Solution

The fourth proportional to 19,121.55, 28,657.89 and 15,425.52 is: 23,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.55 : 28,657.89 = 15,425.52 : x
  2. Step 2: Convert to fraction form
    19,121.55/28,657.89 = 15,425.52/x
  3. Step 3: Cross multiply
    19,121.55x = 28,657.89 × 15,425.52
  4. Step 4: Simplify right side
    19,121.55x = 442,062,855.35
  5. Step 5: Solve for x
    x = 442,062,855.35/19,121.55
  6. Step 6: Final answer
    x = 23,118.57

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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.