Home / 13,352.91-18,428.40-7,687.86

Finding the Fourth Proportional to 13,352.91, 18,428.40 and 7,687.86

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Solution

The fourth proportional to 13,352.91, 18,428.40 and 7,687.86 is: 10,610.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.91 : 18,428.40 = 7,687.86 : x
  2. Step 2: Convert to fraction form
    13,352.91/18,428.40 = 7,687.86/x
  3. Step 3: Cross multiply
    13,352.91x = 18,428.40 × 7,687.86
  4. Step 4: Simplify right side
    13,352.91x = 141,674,959.22
  5. Step 5: Solve for x
    x = 141,674,959.22/13,352.91
  6. Step 6: Final answer
    x = 10,610.04

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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.