Home / 11,518.92-15,897.60-7,041.78

Finding the Fourth Proportional to 11,518.92, 15,897.60 and 7,041.78

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Solution

The fourth proportional to 11,518.92, 15,897.60 and 7,041.78 is: 9,718.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,518.92 : 15,897.60 = 7,041.78 : x
  2. Step 2: Convert to fraction form
    11,518.92/15,897.60 = 7,041.78/x
  3. Step 3: Cross multiply
    11,518.92x = 15,897.60 × 7,041.78
  4. Step 4: Simplify right side
    11,518.92x = 111,947,401.73
  5. Step 5: Solve for x
    x = 111,947,401.73/11,518.92
  6. Step 6: Final answer
    x = 9,718.57

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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.