Home / 21,237.38-29,314.42-12,860.90

Finding the Fourth Proportional to 21,237.38, 29,314.42 and 12,860.90

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Solution

The fourth proportional to 21,237.38, 29,314.42 and 12,860.90 is: 17,752.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.38 : 29,314.42 = 12,860.90 : x
  2. Step 2: Convert to fraction form
    21,237.38/29,314.42 = 12,860.90/x
  3. Step 3: Cross multiply
    21,237.38x = 29,314.42 × 12,860.90
  4. Step 4: Simplify right side
    21,237.38x = 377,009,824.18
  5. Step 5: Solve for x
    x = 377,009,824.18/21,237.38
  6. Step 6: Final answer
    x = 17,752.18

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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.