Home / 21,966.30-30,301.11-13,897.46

Finding the Fourth Proportional to 21,966.30, 30,301.11 and 13,897.46

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Solution

The fourth proportional to 21,966.30, 30,301.11 and 13,897.46 is: 19,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.30 : 30,301.11 = 13,897.46 : x
  2. Step 2: Convert to fraction form
    21,966.30/30,301.11 = 13,897.46/x
  3. Step 3: Cross multiply
    21,966.30x = 30,301.11 × 13,897.46
  4. Step 4: Simplify right side
    21,966.30x = 421,108,312.68
  5. Step 5: Solve for x
    x = 421,108,312.68/21,966.30
  6. Step 6: Final answer
    x = 19,170.65

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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.