Home / 9,947.79-13,728.15-5,915.06

Finding the Fourth Proportional to 9,947.79, 13,728.15 and 5,915.06

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Solution

The fourth proportional to 9,947.79, 13,728.15 and 5,915.06 is: 8,162.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,947.79 : 13,728.15 = 5,915.06 : x
  2. Step 2: Convert to fraction form
    9,947.79/13,728.15 = 5,915.06/x
  3. Step 3: Cross multiply
    9,947.79x = 13,728.15 × 5,915.06
  4. Step 4: Simplify right side
    9,947.79x = 81,202,762.30
  5. Step 5: Solve for x
    x = 81,202,762.30/9,947.79
  6. Step 6: Final answer
    x = 8,162.89

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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.