Home / 21,338.80-32,022.60-13,925.20

Finding the Fourth Proportional to 21,338.80, 32,022.60 and 13,925.20

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Solution

The fourth proportional to 21,338.80, 32,022.60 and 13,925.20 is: 20,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.80 : 32,022.60 = 13,925.20 : x
  2. Step 2: Convert to fraction form
    21,338.80/32,022.60 = 13,925.20/x
  3. Step 3: Cross multiply
    21,338.80x = 32,022.60 × 13,925.20
  4. Step 4: Simplify right side
    21,338.80x = 445,921,109.52
  5. Step 5: Solve for x
    x = 445,921,109.52/21,338.80
  6. Step 6: Final answer
    x = 20,897.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.