Home / 14,087.88-21,149.10-8,915.40

Finding the Fourth Proportional to 14,087.88, 21,149.10 and 8,915.40

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Solution

The fourth proportional to 14,087.88, 21,149.10 and 8,915.40 is: 13,384.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,087.88 : 21,149.10 = 8,915.40 : x
  2. Step 2: Convert to fraction form
    14,087.88/21,149.10 = 8,915.40/x
  3. Step 3: Cross multiply
    14,087.88x = 21,149.10 × 8,915.40
  4. Step 4: Simplify right side
    14,087.88x = 188,552,686.14
  5. Step 5: Solve for x
    x = 188,552,686.14/14,087.88
  6. Step 6: Final answer
    x = 13,384.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.