Home / 12,381.74-18,550.98-10,315.04

Finding the Fourth Proportional to 12,381.74, 18,550.98 and 10,315.04

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Solution

The fourth proportional to 12,381.74, 18,550.98 and 10,315.04 is: 15,454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.74 : 18,550.98 = 10,315.04 : x
  2. Step 2: Convert to fraction form
    12,381.74/18,550.98 = 10,315.04/x
  3. Step 3: Cross multiply
    12,381.74x = 18,550.98 × 10,315.04
  4. Step 4: Simplify right side
    12,381.74x = 191,354,100.74
  5. Step 5: Solve for x
    x = 191,354,100.74/12,381.74
  6. Step 6: Final answer
    x = 15,454.54

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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.