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Finding the Fourth Proportional to 9,965.70, 14,948.55 and 9,389.70

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Solution

The fourth proportional to 9,965.70, 14,948.55 and 9,389.70 is: 14,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,965.70 : 14,948.55 = 9,389.70 : x
  2. Step 2: Convert to fraction form
    9,965.70/14,948.55 = 9,389.70/x
  3. Step 3: Cross multiply
    9,965.70x = 14,948.55 × 9,389.70
  4. Step 4: Simplify right side
    9,965.70x = 140,362,399.94
  5. Step 5: Solve for x
    x = 140,362,399.94/9,965.70
  6. Step 6: Final answer
    x = 14,084.55

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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.