Home / 21,433.20-29,577.78-12,001.76

Finding the Fourth Proportional to 21,433.20, 29,577.78 and 12,001.76

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Solution

The fourth proportional to 21,433.20, 29,577.78 and 12,001.76 is: 16,562.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.20 : 29,577.78 = 12,001.76 : x
  2. Step 2: Convert to fraction form
    21,433.20/29,577.78 = 12,001.76/x
  3. Step 3: Cross multiply
    21,433.20x = 29,577.78 × 12,001.76
  4. Step 4: Simplify right side
    21,433.20x = 354,985,490.84
  5. Step 5: Solve for x
    x = 354,985,490.84/21,433.20
  6. Step 6: Final answer
    x = 16,562.41

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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.