Home / 15,085.72-22,612.15-12,887.79

Finding the Fourth Proportional to 15,085.72, 22,612.15 and 12,887.79

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Solution

The fourth proportional to 15,085.72, 22,612.15 and 12,887.79 is: 19,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.72 : 22,612.15 = 12,887.79 : x
  2. Step 2: Convert to fraction form
    15,085.72/22,612.15 = 12,887.79/x
  3. Step 3: Cross multiply
    15,085.72x = 22,612.15 × 12,887.79
  4. Step 4: Simplify right side
    15,085.72x = 291,420,640.65
  5. Step 5: Solve for x
    x = 291,420,640.65/15,085.72
  6. Step 6: Final answer
    x = 19,317.65

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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.