Home / 20,506.56-28,314.22-12,559.62

Finding the Fourth Proportional to 20,506.56, 28,314.22 and 12,559.62

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Solution

The fourth proportional to 20,506.56, 28,314.22 and 12,559.62 is: 17,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.56 : 28,314.22 = 12,559.62 : x
  2. Step 2: Convert to fraction form
    20,506.56/28,314.22 = 12,559.62/x
  3. Step 3: Cross multiply
    20,506.56x = 28,314.22 × 12,559.62
  4. Step 4: Simplify right side
    20,506.56x = 355,615,843.80
  5. Step 5: Solve for x
    x = 355,615,843.80/20,506.56
  6. Step 6: Final answer
    x = 17,341.57

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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.