Home / 11,272.12-15,557.50-9,381.16

Finding the Fourth Proportional to 11,272.12, 15,557.50 and 9,381.16

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Solution

The fourth proportional to 11,272.12, 15,557.50 and 9,381.16 is: 12,947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,272.12 : 15,557.50 = 9,381.16 : x
  2. Step 2: Convert to fraction form
    11,272.12/15,557.50 = 9,381.16/x
  3. Step 3: Cross multiply
    11,272.12x = 15,557.50 × 9,381.16
  4. Step 4: Simplify right side
    11,272.12x = 145,947,396.70
  5. Step 5: Solve for x
    x = 145,947,396.70/11,272.12
  6. Step 6: Final answer
    x = 12,947.64

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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.