Home / 9,999.30-13,800.66-7,617.12

Finding the Fourth Proportional to 9,999.30, 13,800.66 and 7,617.12

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Solution

The fourth proportional to 9,999.30, 13,800.66 and 7,617.12 is: 10,512.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.30 : 13,800.66 = 7,617.12 : x
  2. Step 2: Convert to fraction form
    9,999.30/13,800.66 = 7,617.12/x
  3. Step 3: Cross multiply
    9,999.30x = 13,800.66 × 7,617.12
  4. Step 4: Simplify right side
    9,999.30x = 105,121,283.30
  5. Step 5: Solve for x
    x = 105,121,283.30/9,999.30
  6. Step 6: Final answer
    x = 10,512.86

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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.