Home / 10,887.11-15,026.67-6,639.60

Finding the Fourth Proportional to 10,887.11, 15,026.67 and 6,639.60

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Solution

The fourth proportional to 10,887.11, 15,026.67 and 6,639.60 is: 9,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.11 : 15,026.67 = 6,639.60 : x
  2. Step 2: Convert to fraction form
    10,887.11/15,026.67 = 6,639.60/x
  3. Step 3: Cross multiply
    10,887.11x = 15,026.67 × 6,639.60
  4. Step 4: Simplify right side
    10,887.11x = 99,771,078.13
  5. Step 5: Solve for x
    x = 99,771,078.13/10,887.11
  6. Step 6: Final answer
    x = 9,164.15

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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.