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Finding the Fourth Proportional to 10,888.32, 15,019.20 and 9,494.40

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Solution

The fourth proportional to 10,888.32, 15,019.20 and 9,494.40 is: 13,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,888.32 : 15,019.20 = 9,494.40 : x
  2. Step 2: Convert to fraction form
    10,888.32/15,019.20 = 9,494.40/x
  3. Step 3: Cross multiply
    10,888.32x = 15,019.20 × 9,494.40
  4. Step 4: Simplify right side
    10,888.32x = 142,598,292.48
  5. Step 5: Solve for x
    x = 142,598,292.48/10,888.32
  6. Step 6: Final answer
    x = 13,096.45

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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.