Home / 21,211.89-29,270.19-12,262.24

Finding the Fourth Proportional to 21,211.89, 29,270.19 and 12,262.24

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Solution

The fourth proportional to 21,211.89, 29,270.19 and 12,262.24 is: 16,920.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.89 : 29,270.19 = 12,262.24 : x
  2. Step 2: Convert to fraction form
    21,211.89/29,270.19 = 12,262.24/x
  3. Step 3: Cross multiply
    21,211.89x = 29,270.19 × 12,262.24
  4. Step 4: Simplify right side
    21,211.89x = 358,918,094.63
  5. Step 5: Solve for x
    x = 358,918,094.63/21,211.89
  6. Step 6: Final answer
    x = 16,920.61

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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.