Home / 11,392.67-15,722.97-6,915.40

Finding the Fourth Proportional to 11,392.67, 15,722.97 and 6,915.40

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Solution

The fourth proportional to 11,392.67, 15,722.97 and 6,915.40 is: 9,543.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.67 : 15,722.97 = 6,915.40 : x
  2. Step 2: Convert to fraction form
    11,392.67/15,722.97 = 6,915.40/x
  3. Step 3: Cross multiply
    11,392.67x = 15,722.97 × 6,915.40
  4. Step 4: Simplify right side
    11,392.67x = 108,730,548.12
  5. Step 5: Solve for x
    x = 108,730,548.12/11,392.67
  6. Step 6: Final answer
    x = 9,543.90

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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.