Home / 9,928.31-13,701.26-5,679.74

Finding the Fourth Proportional to 9,928.31, 13,701.26 and 5,679.74

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Solution

The fourth proportional to 9,928.31, 13,701.26 and 5,679.74 is: 7,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,928.31 : 13,701.26 = 5,679.74 : x
  2. Step 2: Convert to fraction form
    9,928.31/13,701.26 = 5,679.74/x
  3. Step 3: Cross multiply
    9,928.31x = 13,701.26 × 5,679.74
  4. Step 4: Simplify right side
    9,928.31x = 77,819,642.92
  5. Step 5: Solve for x
    x = 77,819,642.92/9,928.31
  6. Step 6: Final answer
    x = 7,838.16

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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.