Home / 18,759.20-28,143.92-6,281.28

Finding the Fourth Proportional to 18,759.20, 28,143.92 and 6,281.28

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Solution

The fourth proportional to 18,759.20, 28,143.92 and 6,281.28 is: 9,423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.20 : 28,143.92 = 6,281.28 : x
  2. Step 2: Convert to fraction form
    18,759.20/28,143.92 = 6,281.28/x
  3. Step 3: Cross multiply
    18,759.20x = 28,143.92 × 6,281.28
  4. Step 4: Simplify right side
    18,759.20x = 176,779,841.82
  5. Step 5: Solve for x
    x = 176,779,841.82/18,759.20
  6. Step 6: Final answer
    x = 9,423.63

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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.