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Finding the Fourth Proportional to 15,470.96, 21,361.02 and 9,510.62

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Solution

The fourth proportional to 15,470.96, 21,361.02 and 9,510.62 is: 13,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.96 : 21,361.02 = 9,510.62 : x
  2. Step 2: Convert to fraction form
    15,470.96/21,361.02 = 9,510.62/x
  3. Step 3: Cross multiply
    15,470.96x = 21,361.02 × 9,510.62
  4. Step 4: Simplify right side
    15,470.96x = 203,156,544.03
  5. Step 5: Solve for x
    x = 203,156,544.03/15,470.96
  6. Step 6: Final answer
    x = 13,131.48

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.