Home / 15,915.04-21,962.82-8,841.76

Finding the Fourth Proportional to 15,915.04, 21,962.82 and 8,841.76

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Solution

The fourth proportional to 15,915.04, 21,962.82 and 8,841.76 is: 12,201.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.04 : 21,962.82 = 8,841.76 : x
  2. Step 2: Convert to fraction form
    15,915.04/21,962.82 = 8,841.76/x
  3. Step 3: Cross multiply
    15,915.04x = 21,962.82 × 8,841.76
  4. Step 4: Simplify right side
    15,915.04x = 194,189,983.36
  5. Step 5: Solve for x
    x = 194,189,983.36/15,915.04
  6. Step 6: Final answer
    x = 12,201.66

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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.