Home / 18,872.47-28,312.12-15,393.31

Finding the Fourth Proportional to 18,872.47, 28,312.12 and 15,393.31

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Solution

The fourth proportional to 18,872.47, 28,312.12 and 15,393.31 is: 23,092.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.47 : 28,312.12 = 15,393.31 : x
  2. Step 2: Convert to fraction form
    18,872.47/28,312.12 = 15,393.31/x
  3. Step 3: Cross multiply
    18,872.47x = 28,312.12 × 15,393.31
  4. Step 4: Simplify right side
    18,872.47x = 435,817,239.92
  5. Step 5: Solve for x
    x = 435,817,239.92/18,872.47
  6. Step 6: Final answer
    x = 23,092.75

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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.