Home / 9,966.21-13,753.77-5,718.45

Finding the Fourth Proportional to 9,966.21, 13,753.77 and 5,718.45

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Solution

The fourth proportional to 9,966.21, 13,753.77 and 5,718.45 is: 7,891.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.21 : 13,753.77 = 5,718.45 : x
  2. Step 2: Convert to fraction form
    9,966.21/13,753.77 = 5,718.45/x
  3. Step 3: Cross multiply
    9,966.21x = 13,753.77 × 5,718.45
  4. Step 4: Simplify right side
    9,966.21x = 78,650,246.06
  5. Step 5: Solve for x
    x = 78,650,246.06/9,966.21
  6. Step 6: Final answer
    x = 7,891.69

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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.