Home / 20,506.39-28,300.13-15,461.71

Finding the Fourth Proportional to 20,506.39, 28,300.13 and 15,461.71

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Solution

The fourth proportional to 20,506.39, 28,300.13 and 15,461.71 is: 21,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.39 : 28,300.13 = 15,461.71 : x
  2. Step 2: Convert to fraction form
    20,506.39/28,300.13 = 15,461.71/x
  3. Step 3: Cross multiply
    20,506.39x = 28,300.13 × 15,461.71
  4. Step 4: Simplify right side
    20,506.39x = 437,568,403.02
  5. Step 5: Solve for x
    x = 437,568,403.02/20,506.39
  6. Step 6: Final answer
    x = 21,338.15

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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.