Home / 12,610.95-17,387.70-7,887.03

Finding the Fourth Proportional to 12,610.95, 17,387.70 and 7,887.03

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Solution

The fourth proportional to 12,610.95, 17,387.70 and 7,887.03 is: 10,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,610.95 : 17,387.70 = 7,887.03 : x
  2. Step 2: Convert to fraction form
    12,610.95/17,387.70 = 7,887.03/x
  3. Step 3: Cross multiply
    12,610.95x = 17,387.70 × 7,887.03
  4. Step 4: Simplify right side
    12,610.95x = 137,137,272.10
  5. Step 5: Solve for x
    x = 137,137,272.10/12,610.95
  6. Step 6: Final answer
    x = 10,874.46

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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.