Home / 15,627.12-21,561.16-8,910.29

Finding the Fourth Proportional to 15,627.12, 21,561.16 and 8,910.29

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Solution

The fourth proportional to 15,627.12, 21,561.16 and 8,910.29 is: 12,293.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.12 : 21,561.16 = 8,910.29 : x
  2. Step 2: Convert to fraction form
    15,627.12/21,561.16 = 8,910.29/x
  3. Step 3: Cross multiply
    15,627.12x = 21,561.16 × 8,910.29
  4. Step 4: Simplify right side
    15,627.12x = 192,116,246.92
  5. Step 5: Solve for x
    x = 192,116,246.92/15,627.12
  6. Step 6: Final answer
    x = 12,293.77

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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.