Home / 15,963.76-22,031.40-9,679.60

Finding the Fourth Proportional to 15,963.76, 22,031.40 and 9,679.60

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Solution

The fourth proportional to 15,963.76, 22,031.40 and 9,679.60 is: 13,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,963.76 : 22,031.40 = 9,679.60 : x
  2. Step 2: Convert to fraction form
    15,963.76/22,031.40 = 9,679.60/x
  3. Step 3: Cross multiply
    15,963.76x = 22,031.40 × 9,679.60
  4. Step 4: Simplify right side
    15,963.76x = 213,255,139.44
  5. Step 5: Solve for x
    x = 213,255,139.44/15,963.76
  6. Step 6: Final answer
    x = 13,358.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.