Home / 20,156.40-30,224.16-11,838.96

Finding the Fourth Proportional to 20,156.40, 30,224.16 and 11,838.96

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Solution

The fourth proportional to 20,156.40, 30,224.16 and 11,838.96 is: 17,752.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.40 : 30,224.16 = 11,838.96 : x
  2. Step 2: Convert to fraction form
    20,156.40/30,224.16 = 11,838.96/x
  3. Step 3: Cross multiply
    20,156.40x = 30,224.16 × 11,838.96
  4. Step 4: Simplify right side
    20,156.40x = 357,822,621.27
  5. Step 5: Solve for x
    x = 357,822,621.27/20,156.40
  6. Step 6: Final answer
    x = 17,752.31

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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.