Home / 11,153.76-15,390.44-6,437.16

Finding the Fourth Proportional to 11,153.76, 15,390.44 and 6,437.16

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Solution

The fourth proportional to 11,153.76, 15,390.44 and 6,437.16 is: 8,882.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.76 : 15,390.44 = 6,437.16 : x
  2. Step 2: Convert to fraction form
    11,153.76/15,390.44 = 6,437.16/x
  3. Step 3: Cross multiply
    11,153.76x = 15,390.44 × 6,437.16
  4. Step 4: Simplify right side
    11,153.76x = 99,070,724.75
  5. Step 5: Solve for x
    x = 99,070,724.75/11,153.76
  6. Step 6: Final answer
    x = 8,882.27

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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.