Home / 11,139.04-15,373.56-6,422.32

Finding the Fourth Proportional to 11,139.04, 15,373.56 and 6,422.32

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Solution

The fourth proportional to 11,139.04, 15,373.56 and 6,422.32 is: 8,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.04 : 15,373.56 = 6,422.32 : x
  2. Step 2: Convert to fraction form
    11,139.04/15,373.56 = 6,422.32/x
  3. Step 3: Cross multiply
    11,139.04x = 15,373.56 × 6,422.32
  4. Step 4: Simplify right side
    11,139.04x = 98,733,921.86
  5. Step 5: Solve for x
    x = 98,733,921.86/11,139.04
  6. Step 6: Final answer
    x = 8,863.77

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Double scale
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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.