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Finding the Fourth Proportional to 9,672.90, 14,509.35 and 9,089.70

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Solution

The fourth proportional to 9,672.90, 14,509.35 and 9,089.70 is: 13,634.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,672.90 : 14,509.35 = 9,089.70 : x
  2. Step 2: Convert to fraction form
    9,672.90/14,509.35 = 9,089.70/x
  3. Step 3: Cross multiply
    9,672.90x = 14,509.35 × 9,089.70
  4. Step 4: Simplify right side
    9,672.90x = 131,885,638.70
  5. Step 5: Solve for x
    x = 131,885,638.70/9,672.90
  6. Step 6: Final answer
    x = 13,634.55

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Double scale
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Similar ratio
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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.