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Finding the Fourth Proportional to 15,079.84, 20,810.16 and 8,366.50

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Solution

The fourth proportional to 15,079.84, 20,810.16 and 8,366.50 is: 11,545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,079.84 : 20,810.16 = 8,366.50 : x
  2. Step 2: Convert to fraction form
    15,079.84/20,810.16 = 8,366.50/x
  3. Step 3: Cross multiply
    15,079.84x = 20,810.16 × 8,366.50
  4. Step 4: Simplify right side
    15,079.84x = 174,108,203.64
  5. Step 5: Solve for x
    x = 174,108,203.64/15,079.84
  6. Step 6: Final answer
    x = 11,545.76

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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.