Home / 21,910.55-30,251.16-12,960.93

Finding the Fourth Proportional to 21,910.55, 30,251.16 and 12,960.93

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Solution

The fourth proportional to 21,910.55, 30,251.16 and 12,960.93 is: 17,894.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.55 : 30,251.16 = 12,960.93 : x
  2. Step 2: Convert to fraction form
    21,910.55/30,251.16 = 12,960.93/x
  3. Step 3: Cross multiply
    21,910.55x = 30,251.16 × 12,960.93
  4. Step 4: Simplify right side
    21,910.55x = 392,083,167.18
  5. Step 5: Solve for x
    x = 392,083,167.18/21,910.55
  6. Step 6: Final answer
    x = 17,894.72

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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.