Home / 21,375.95-29,490.19-14,209.33

Finding the Fourth Proportional to 21,375.95, 29,490.19 and 14,209.33

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Solution

The fourth proportional to 21,375.95, 29,490.19 and 14,209.33 is: 19,603.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.95 : 29,490.19 = 14,209.33 : x
  2. Step 2: Convert to fraction form
    21,375.95/29,490.19 = 14,209.33/x
  3. Step 3: Cross multiply
    21,375.95x = 29,490.19 × 14,209.33
  4. Step 4: Simplify right side
    21,375.95x = 419,035,770.43
  5. Step 5: Solve for x
    x = 419,035,770.43/21,375.95
  6. Step 6: Final answer
    x = 19,603.14

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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.