Home / 20,156.60-27,814.20-11,203.04

Finding the Fourth Proportional to 20,156.60, 27,814.20 and 11,203.04

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Solution

The fourth proportional to 20,156.60, 27,814.20 and 11,203.04 is: 15,459.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.60 : 27,814.20 = 11,203.04 : x
  2. Step 2: Convert to fraction form
    20,156.60/27,814.20 = 11,203.04/x
  3. Step 3: Cross multiply
    20,156.60x = 27,814.20 × 11,203.04
  4. Step 4: Simplify right side
    20,156.60x = 311,603,595.17
  5. Step 5: Solve for x
    x = 311,603,595.17/20,156.60
  6. Step 6: Final answer
    x = 15,459.13

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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.