Home / 15,310.88-21,125.12-9,342.16

Finding the Fourth Proportional to 15,310.88, 21,125.12 and 9,342.16

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Solution

The fourth proportional to 15,310.88, 21,125.12 and 9,342.16 is: 12,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.88 : 21,125.12 = 9,342.16 : x
  2. Step 2: Convert to fraction form
    15,310.88/21,125.12 = 9,342.16/x
  3. Step 3: Cross multiply
    15,310.88x = 21,125.12 × 9,342.16
  4. Step 4: Simplify right side
    15,310.88x = 197,354,251.06
  5. Step 5: Solve for x
    x = 197,354,251.06/15,310.88
  6. Step 6: Final answer
    x = 12,889.80

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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.