Home / 10,915.32-15,062.42-6,439.26

Finding the Fourth Proportional to 10,915.32, 15,062.42 and 6,439.26

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Solution

The fourth proportional to 10,915.32, 15,062.42 and 6,439.26 is: 8,885.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.32 : 15,062.42 = 6,439.26 : x
  2. Step 2: Convert to fraction form
    10,915.32/15,062.42 = 6,439.26/x
  3. Step 3: Cross multiply
    10,915.32x = 15,062.42 × 6,439.26
  4. Step 4: Simplify right side
    10,915.32x = 96,990,838.61
  5. Step 5: Solve for x
    x = 96,990,838.61/10,915.32
  6. Step 6: Final answer
    x = 8,885.75

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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.