Home / 20,318.22-28,037.83-11,364.18

Finding the Fourth Proportional to 20,318.22, 28,037.83 and 11,364.18

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Solution

The fourth proportional to 20,318.22, 28,037.83 and 11,364.18 is: 15,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.22 : 28,037.83 = 11,364.18 : x
  2. Step 2: Convert to fraction form
    20,318.22/28,037.83 = 11,364.18/x
  3. Step 3: Cross multiply
    20,318.22x = 28,037.83 × 11,364.18
  4. Step 4: Simplify right side
    20,318.22x = 318,626,946.93
  5. Step 5: Solve for x
    x = 318,626,946.93/20,318.22
  6. Step 6: Final answer
    x = 15,681.83

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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.