Home / 11,280.16-15,581.52-8,659.96

Finding the Fourth Proportional to 11,280.16, 15,581.52 and 8,659.96

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Solution

The fourth proportional to 11,280.16, 15,581.52 and 8,659.96 is: 11,962.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.16 : 15,581.52 = 8,659.96 : x
  2. Step 2: Convert to fraction form
    11,280.16/15,581.52 = 8,659.96/x
  3. Step 3: Cross multiply
    11,280.16x = 15,581.52 × 8,659.96
  4. Step 4: Simplify right side
    11,280.16x = 134,935,339.94
  5. Step 5: Solve for x
    x = 134,935,339.94/11,280.16
  6. Step 6: Final answer
    x = 11,962.18

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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.