Home / 21,868.33-30,177.30-13,384.57

Finding the Fourth Proportional to 21,868.33, 30,177.30 and 13,384.57

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Solution

The fourth proportional to 21,868.33, 30,177.30 and 13,384.57 is: 18,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.33 : 30,177.30 = 13,384.57 : x
  2. Step 2: Convert to fraction form
    21,868.33/30,177.30 = 13,384.57/x
  3. Step 3: Cross multiply
    21,868.33x = 30,177.30 × 13,384.57
  4. Step 4: Simplify right side
    21,868.33x = 403,910,184.26
  5. Step 5: Solve for x
    x = 403,910,184.26/21,868.33
  6. Step 6: Final answer
    x = 18,470.10

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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.