Home / 15,640.86-23,451.57-8,720.22

Finding the Fourth Proportional to 15,640.86, 23,451.57 and 8,720.22

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Solution

The fourth proportional to 15,640.86, 23,451.57 and 8,720.22 is: 13,074.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.86 : 23,451.57 = 8,720.22 : x
  2. Step 2: Convert to fraction form
    15,640.86/23,451.57 = 8,720.22/x
  3. Step 3: Cross multiply
    15,640.86x = 23,451.57 × 8,720.22
  4. Step 4: Simplify right side
    15,640.86x = 204,502,849.75
  5. Step 5: Solve for x
    x = 204,502,849.75/15,640.86
  6. Step 6: Final answer
    x = 13,074.91

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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.