Home / 28,281.92-42,422.88-10,747.60

Finding the Fourth Proportional to 28,281.92, 42,422.88 and 10,747.60

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Solution

The fourth proportional to 28,281.92, 42,422.88 and 10,747.60 is: 16,121.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.92 : 42,422.88 = 10,747.60 : x
  2. Step 2: Convert to fraction form
    28,281.92/42,422.88 = 10,747.60/x
  3. Step 3: Cross multiply
    28,281.92x = 42,422.88 × 10,747.60
  4. Step 4: Simplify right side
    28,281.92x = 455,944,145.09
  5. Step 5: Solve for x
    x = 455,944,145.09/28,281.92
  6. Step 6: Final answer
    x = 16,121.40

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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.