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Finding the Fourth Proportional to 14,701.64, 20,278.20 and 9,394.10

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Solution

The fourth proportional to 14,701.64, 20,278.20 and 9,394.10 is: 12,957.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,701.64 : 20,278.20 = 9,394.10 : x
  2. Step 2: Convert to fraction form
    14,701.64/20,278.20 = 9,394.10/x
  3. Step 3: Cross multiply
    14,701.64x = 20,278.20 × 9,394.10
  4. Step 4: Simplify right side
    14,701.64x = 190,495,438.62
  5. Step 5: Solve for x
    x = 190,495,438.62/14,701.64
  6. Step 6: Final answer
    x = 12,957.43

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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.