Home / 15,587.28-21,510.14-8,872.76

Finding the Fourth Proportional to 15,587.28, 21,510.14 and 8,872.76

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Solution

The fourth proportional to 15,587.28, 21,510.14 and 8,872.76 is: 12,244.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.28 : 21,510.14 = 8,872.76 : x
  2. Step 2: Convert to fraction form
    15,587.28/21,510.14 = 8,872.76/x
  3. Step 3: Cross multiply
    15,587.28x = 21,510.14 × 8,872.76
  4. Step 4: Simplify right side
    15,587.28x = 190,854,319.20
  5. Step 5: Solve for x
    x = 190,854,319.20/15,587.28
  6. Step 6: Final answer
    x = 12,244.23

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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.