Home / 9,947.31-13,723.93-5,639.95

Finding the Fourth Proportional to 9,947.31, 13,723.93 and 5,639.95

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Solution

The fourth proportional to 9,947.31, 13,723.93 and 5,639.95 is: 7,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,947.31 : 13,723.93 = 5,639.95 : x
  2. Step 2: Convert to fraction form
    9,947.31/13,723.93 = 5,639.95/x
  3. Step 3: Cross multiply
    9,947.31x = 13,723.93 × 5,639.95
  4. Step 4: Simplify right side
    9,947.31x = 77,402,182.18
  5. Step 5: Solve for x
    x = 77,402,182.18/9,947.31
  6. Step 6: Final answer
    x = 7,781.22

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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.