Home / 20,429.04-28,195.16-12,475.86

Finding the Fourth Proportional to 20,429.04, 28,195.16 and 12,475.86

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Solution

The fourth proportional to 20,429.04, 28,195.16 and 12,475.86 is: 17,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.04 : 28,195.16 = 12,475.86 : x
  2. Step 2: Convert to fraction form
    20,429.04/28,195.16 = 12,475.86/x
  3. Step 3: Cross multiply
    20,429.04x = 28,195.16 × 12,475.86
  4. Step 4: Simplify right side
    20,429.04x = 351,758,806.46
  5. Step 5: Solve for x
    x = 351,758,806.46/20,429.04
  6. Step 6: Final answer
    x = 17,218.57

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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.