Home / 15,423.45-21,320.24-13,761.33

Finding the Fourth Proportional to 15,423.45, 21,320.24 and 13,761.33

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Solution

The fourth proportional to 15,423.45, 21,320.24 and 13,761.33 is: 19,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.45 : 21,320.24 = 13,761.33 : x
  2. Step 2: Convert to fraction form
    15,423.45/21,320.24 = 13,761.33/x
  3. Step 3: Cross multiply
    15,423.45x = 21,320.24 × 13,761.33
  4. Step 4: Simplify right side
    15,423.45x = 293,394,858.32
  5. Step 5: Solve for x
    x = 293,394,858.32/15,423.45
  6. Step 6: Final answer
    x = 19,022.65

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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.