Home / 20,143.04-30,212.40-12,338.24

Finding the Fourth Proportional to 20,143.04, 30,212.40 and 12,338.24

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Solution

The fourth proportional to 20,143.04, 30,212.40 and 12,338.24 is: 18,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.04 : 30,212.40 = 12,338.24 : x
  2. Step 2: Convert to fraction form
    20,143.04/30,212.40 = 12,338.24/x
  3. Step 3: Cross multiply
    20,143.04x = 30,212.40 × 12,338.24
  4. Step 4: Simplify right side
    20,143.04x = 372,767,842.18
  5. Step 5: Solve for x
    x = 372,767,842.18/20,143.04
  6. Step 6: Final answer
    x = 18,506.04

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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.