Home / 9,966.50-13,753.77-5,777.18

Finding the Fourth Proportional to 9,966.50, 13,753.77 and 5,777.18

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Solution

The fourth proportional to 9,966.50, 13,753.77 and 5,777.18 is: 7,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.50 : 13,753.77 = 5,777.18 : x
  2. Step 2: Convert to fraction form
    9,966.50/13,753.77 = 5,777.18/x
  3. Step 3: Cross multiply
    9,966.50x = 13,753.77 × 5,777.18
  4. Step 4: Simplify right side
    9,966.50x = 79,458,004.97
  5. Step 5: Solve for x
    x = 79,458,004.97/9,966.50
  6. Step 6: Final answer
    x = 7,972.51

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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.