Home / 21,180.08-29,228.38-11,748.65

Finding the Fourth Proportional to 21,180.08, 29,228.38 and 11,748.65

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Solution

The fourth proportional to 21,180.08, 29,228.38 and 11,748.65 is: 16,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.08 : 29,228.38 = 11,748.65 : x
  2. Step 2: Convert to fraction form
    21,180.08/29,228.38 = 11,748.65/x
  3. Step 3: Cross multiply
    21,180.08x = 29,228.38 × 11,748.65
  4. Step 4: Simplify right side
    21,180.08x = 343,393,831.17
  5. Step 5: Solve for x
    x = 343,393,831.17/21,180.08
  6. Step 6: Final answer
    x = 16,213.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.