Home / 13,610.18-18,778.97-7,641.45

Finding the Fourth Proportional to 13,610.18, 18,778.97 and 7,641.45

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Solution

The fourth proportional to 13,610.18, 18,778.97 and 7,641.45 is: 10,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.18 : 18,778.97 = 7,641.45 : x
  2. Step 2: Convert to fraction form
    13,610.18/18,778.97 = 7,641.45/x
  3. Step 3: Cross multiply
    13,610.18x = 18,778.97 × 7,641.45
  4. Step 4: Simplify right side
    13,610.18x = 143,498,526.59
  5. Step 5: Solve for x
    x = 143,498,526.59/13,610.18
  6. Step 6: Final answer
    x = 10,543.47

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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.