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Finding the Fourth Proportional to 15,070.80, 20,797.08 and 8,264.76

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Solution

The fourth proportional to 15,070.80, 20,797.08 and 8,264.76 is: 11,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.80 : 20,797.08 = 8,264.76 : x
  2. Step 2: Convert to fraction form
    15,070.80/20,797.08 = 8,264.76/x
  3. Step 3: Cross multiply
    15,070.80x = 20,797.08 × 8,264.76
  4. Step 4: Simplify right side
    15,070.80x = 171,882,874.90
  5. Step 5: Solve for x
    x = 171,882,874.90/15,070.80
  6. Step 6: Final answer
    x = 11,405.03

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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.