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Finding the Fourth Proportional to 16,713.76, 25,070.64 and 13,578.88

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Solution

The fourth proportional to 16,713.76, 25,070.64 and 13,578.88 is: 20,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,713.76 : 25,070.64 = 13,578.88 : x
  2. Step 2: Convert to fraction form
    16,713.76/25,070.64 = 13,578.88/x
  3. Step 3: Cross multiply
    16,713.76x = 25,070.64 × 13,578.88
  4. Step 4: Simplify right side
    16,713.76x = 340,431,212.08
  5. Step 5: Solve for x
    x = 340,431,212.08/16,713.76
  6. Step 6: Final answer
    x = 20,368.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.