Home / 31,394.98-47,108.49-20,872.18

Finding the Fourth Proportional to 31,394.98, 47,108.49 and 20,872.18

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Solution

The fourth proportional to 31,394.98, 47,108.49 and 20,872.18 is: 31,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,394.98 : 47,108.49 = 20,872.18 : x
  2. Step 2: Convert to fraction form
    31,394.98/47,108.49 = 20,872.18/x
  3. Step 3: Cross multiply
    31,394.98x = 47,108.49 × 20,872.18
  4. Step 4: Simplify right side
    31,394.98x = 983,256,882.81
  5. Step 5: Solve for x
    x = 983,256,882.81/31,394.98
  6. Step 6: Final answer
    x = 31,318.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.