Home / 21,399.38-29,535.20-14,338.07

Finding the Fourth Proportional to 21,399.38, 29,535.20 and 14,338.07

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Solution

The fourth proportional to 21,399.38, 29,535.20 and 14,338.07 is: 19,789.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.38 : 29,535.20 = 14,338.07 : x
  2. Step 2: Convert to fraction form
    21,399.38/29,535.20 = 14,338.07/x
  3. Step 3: Cross multiply
    21,399.38x = 29,535.20 × 14,338.07
  4. Step 4: Simplify right side
    21,399.38x = 423,477,765.06
  5. Step 5: Solve for x
    x = 423,477,765.06/21,399.38
  6. Step 6: Final answer
    x = 19,789.25

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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.