Home / 10,639.20-15,988.08-5,712.48

Finding the Fourth Proportional to 10,639.20, 15,988.08 and 5,712.48

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Solution

The fourth proportional to 10,639.20, 15,988.08 and 5,712.48 is: 8,584.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.20 : 15,988.08 = 5,712.48 : x
  2. Step 2: Convert to fraction form
    10,639.20/15,988.08 = 5,712.48/x
  3. Step 3: Cross multiply
    10,639.20x = 15,988.08 × 5,712.48
  4. Step 4: Simplify right side
    10,639.20x = 91,331,587.24
  5. Step 5: Solve for x
    x = 91,331,587.24/10,639.20
  6. Step 6: Final answer
    x = 8,584.44

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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.