Home / 10,881.20-16,278.60-9,436.40

Finding the Fourth Proportional to 10,881.20, 16,278.60 and 9,436.40

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Solution

The fourth proportional to 10,881.20, 16,278.60 and 9,436.40 is: 14,117.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.20 : 16,278.60 = 9,436.40 : x
  2. Step 2: Convert to fraction form
    10,881.20/16,278.60 = 9,436.40/x
  3. Step 3: Cross multiply
    10,881.20x = 16,278.60 × 9,436.40
  4. Step 4: Simplify right side
    10,881.20x = 153,611,381.04
  5. Step 5: Solve for x
    x = 153,611,381.04/10,881.20
  6. Step 6: Final answer
    x = 14,117.14

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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.