Home / 31,115.28-46,672.70-18,638.84

Finding the Fourth Proportional to 31,115.28, 46,672.70 and 18,638.84

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Solution

The fourth proportional to 31,115.28, 46,672.70 and 18,638.84 is: 27,958.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,115.28 : 46,672.70 = 18,638.84 : x
  2. Step 2: Convert to fraction form
    31,115.28/46,672.70 = 18,638.84/x
  3. Step 3: Cross multiply
    31,115.28x = 46,672.70 × 18,638.84
  4. Step 4: Simplify right side
    31,115.28x = 869,924,987.67
  5. Step 5: Solve for x
    x = 869,924,987.67/31,115.28
  6. Step 6: Final answer
    x = 27,958.13

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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.