Home / 20,595.39-28,426.73-13,531.38

Finding the Fourth Proportional to 20,595.39, 28,426.73 and 13,531.38

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Solution

The fourth proportional to 20,595.39, 28,426.73 and 13,531.38 is: 18,676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.39 : 28,426.73 = 13,531.38 : x
  2. Step 2: Convert to fraction form
    20,595.39/28,426.73 = 13,531.38/x
  3. Step 3: Cross multiply
    20,595.39x = 28,426.73 × 13,531.38
  4. Step 4: Simplify right side
    20,595.39x = 384,652,818.13
  5. Step 5: Solve for x
    x = 384,652,818.13/20,595.39
  6. Step 6: Final answer
    x = 18,676.65

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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.