Home / 21,099.80-29,139.18-14,801.24

Finding the Fourth Proportional to 21,099.80, 29,139.18 and 14,801.24

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Solution

The fourth proportional to 21,099.80, 29,139.18 and 14,801.24 is: 20,440.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.80 : 29,139.18 = 14,801.24 : x
  2. Step 2: Convert to fraction form
    21,099.80/29,139.18 = 14,801.24/x
  3. Step 3: Cross multiply
    21,099.80x = 29,139.18 × 14,801.24
  4. Step 4: Simplify right side
    21,099.80x = 431,295,996.58
  5. Step 5: Solve for x
    x = 431,295,996.58/21,099.80
  6. Step 6: Final answer
    x = 20,440.76

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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.