Home / 21,060.75-29,029.18-14,930.49

Finding the Fourth Proportional to 21,060.75, 29,029.18 and 14,930.49

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Solution

The fourth proportional to 21,060.75, 29,029.18 and 14,930.49 is: 20,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.75 : 29,029.18 = 14,930.49 : x
  2. Step 2: Convert to fraction form
    21,060.75/29,029.18 = 14,930.49/x
  3. Step 3: Cross multiply
    21,060.75x = 29,029.18 × 14,930.49
  4. Step 4: Simplify right side
    21,060.75x = 433,419,881.70
  5. Step 5: Solve for x
    x = 433,419,881.70/21,060.75
  6. Step 6: Final answer
    x = 20,579.51

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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.