Home / 13,110.90-18,092.40-7,142.52

Finding the Fourth Proportional to 13,110.90, 18,092.40 and 7,142.52

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Solution

The fourth proportional to 13,110.90, 18,092.40 and 7,142.52 is: 9,856.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.90 : 18,092.40 = 7,142.52 : x
  2. Step 2: Convert to fraction form
    13,110.90/18,092.40 = 7,142.52/x
  3. Step 3: Cross multiply
    13,110.90x = 18,092.40 × 7,142.52
  4. Step 4: Simplify right side
    13,110.90x = 129,225,328.85
  5. Step 5: Solve for x
    x = 129,225,328.85/13,110.90
  6. Step 6: Final answer
    x = 9,856.33

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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.