Home / 9,930.11-13,699.73-5,680.31

Finding the Fourth Proportional to 9,930.11, 13,699.73 and 5,680.31

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Solution

The fourth proportional to 9,930.11, 13,699.73 and 5,680.31 is: 7,836.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.11 : 13,699.73 = 5,680.31 : x
  2. Step 2: Convert to fraction form
    9,930.11/13,699.73 = 5,680.31/x
  3. Step 3: Cross multiply
    9,930.11x = 13,699.73 × 5,680.31
  4. Step 4: Simplify right side
    9,930.11x = 77,818,659.02
  5. Step 5: Solve for x
    x = 77,818,659.02/9,930.11
  6. Step 6: Final answer
    x = 7,836.64

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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.