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Finding the Fourth Proportional to 14,920.64, 20,584.32 and 9,614.72

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Solution

The fourth proportional to 14,920.64, 20,584.32 and 9,614.72 is: 13,264.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.64 : 20,584.32 = 9,614.72 : x
  2. Step 2: Convert to fraction form
    14,920.64/20,584.32 = 9,614.72/x
  3. Step 3: Cross multiply
    14,920.64x = 20,584.32 × 9,614.72
  4. Step 4: Simplify right side
    14,920.64x = 197,912,473.19
  5. Step 5: Solve for x
    x = 197,912,473.19/14,920.64
  6. Step 6: Final answer
    x = 13,264.34

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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.