Home / 31,437.18-43,372.73-21,348.11

Finding the Fourth Proportional to 31,437.18, 43,372.73 and 21,348.11

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Solution

The fourth proportional to 31,437.18, 43,372.73 and 21,348.11 is: 29,453.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.18 : 43,372.73 = 21,348.11 : x
  2. Step 2: Convert to fraction form
    31,437.18/43,372.73 = 21,348.11/x
  3. Step 3: Cross multiply
    31,437.18x = 43,372.73 × 21,348.11
  4. Step 4: Simplify right side
    31,437.18x = 925,925,972.84
  5. Step 5: Solve for x
    x = 925,925,972.84/31,437.18
  6. Step 6: Final answer
    x = 29,453.21

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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.