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Finding the Fourth Proportional to 15,053.63, 20,773.59 and 8,680.10

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Solution

The fourth proportional to 15,053.63, 20,773.59 and 8,680.10 is: 11,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,053.63 : 20,773.59 = 8,680.10 : x
  2. Step 2: Convert to fraction form
    15,053.63/20,773.59 = 8,680.10/x
  3. Step 3: Cross multiply
    15,053.63x = 20,773.59 × 8,680.10
  4. Step 4: Simplify right side
    15,053.63x = 180,316,838.56
  5. Step 5: Solve for x
    x = 180,316,838.56/15,053.63
  6. Step 6: Final answer
    x = 11,978.30

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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.