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Finding the Fourth Proportional to 14,720.76, 20,287.44 and 12,475.44

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Solution

The fourth proportional to 14,720.76, 20,287.44 and 12,475.44 is: 17,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.76 : 20,287.44 = 12,475.44 : x
  2. Step 2: Convert to fraction form
    14,720.76/20,287.44 = 12,475.44/x
  3. Step 3: Cross multiply
    14,720.76x = 20,287.44 × 12,475.44
  4. Step 4: Simplify right side
    14,720.76x = 253,094,740.47
  5. Step 5: Solve for x
    x = 253,094,740.47/14,720.76
  6. Step 6: Final answer
    x = 17,193.05

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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.