Home / 11,102.90-15,322.22-6,387.48

Finding the Fourth Proportional to 11,102.90, 15,322.22 and 6,387.48

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Solution

The fourth proportional to 11,102.90, 15,322.22 and 6,387.48 is: 8,814.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,102.90 : 15,322.22 = 6,387.48 : x
  2. Step 2: Convert to fraction form
    11,102.90/15,322.22 = 6,387.48/x
  3. Step 3: Cross multiply
    11,102.90x = 15,322.22 × 6,387.48
  4. Step 4: Simplify right side
    11,102.90x = 97,870,373.81
  5. Step 5: Solve for x
    x = 97,870,373.81/11,102.90
  6. Step 6: Final answer
    x = 8,814.85

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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.