Home / 20,113.04-27,755.21-11,159.91

Finding the Fourth Proportional to 20,113.04, 27,755.21 and 11,159.91

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Solution

The fourth proportional to 20,113.04, 27,755.21 and 11,159.91 is: 15,400.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.04 : 27,755.21 = 11,159.91 : x
  2. Step 2: Convert to fraction form
    20,113.04/27,755.21 = 11,159.91/x
  3. Step 3: Cross multiply
    20,113.04x = 27,755.21 × 11,159.91
  4. Step 4: Simplify right side
    20,113.04x = 309,745,673.53
  5. Step 5: Solve for x
    x = 309,745,673.53/20,113.04
  6. Step 6: Final answer
    x = 15,400.24

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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.