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Finding the Fourth Proportional to 15,008.40, 20,600.64 and 14,366.88

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Solution

The fourth proportional to 15,008.40, 20,600.64 and 14,366.88 is: 19,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.40 : 20,600.64 = 14,366.88 : x
  2. Step 2: Convert to fraction form
    15,008.40/20,600.64 = 14,366.88/x
  3. Step 3: Cross multiply
    15,008.40x = 20,600.64 × 14,366.88
  4. Step 4: Simplify right side
    15,008.40x = 295,966,922.80
  5. Step 5: Solve for x
    x = 295,966,922.80/15,008.40
  6. Step 6: Final answer
    x = 19,720.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.