Home / 9,947.81-13,729.91-5,915.43

Finding the Fourth Proportional to 9,947.81, 13,729.91 and 5,915.43

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Solution

The fourth proportional to 9,947.81, 13,729.91 and 5,915.43 is: 8,164.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,947.81 : 13,729.91 = 5,915.43 : x
  2. Step 2: Convert to fraction form
    9,947.81/13,729.91 = 5,915.43/x
  3. Step 3: Cross multiply
    9,947.81x = 13,729.91 × 5,915.43
  4. Step 4: Simplify right side
    9,947.81x = 81,218,291.93
  5. Step 5: Solve for x
    x = 81,218,291.93/9,947.81
  6. Step 6: Final answer
    x = 8,164.44

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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.