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Finding the Fourth Proportional to 9,630.72, 14,479.02 and 8,909.28

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Solution

The fourth proportional to 9,630.72, 14,479.02 and 8,909.28 is: 13,394.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,630.72 : 14,479.02 = 8,909.28 : x
  2. Step 2: Convert to fraction form
    9,630.72/14,479.02 = 8,909.28/x
  3. Step 3: Cross multiply
    9,630.72x = 14,479.02 × 8,909.28
  4. Step 4: Simplify right side
    9,630.72x = 128,997,643.31
  5. Step 5: Solve for x
    x = 128,997,643.31/9,630.72
  6. Step 6: Final answer
    x = 13,394.39

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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.