Home / 20,604.29-28,425.87-13,442.63

Finding the Fourth Proportional to 20,604.29, 28,425.87 and 13,442.63

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Solution

The fourth proportional to 20,604.29, 28,425.87 and 13,442.63 is: 18,545.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.29 : 28,425.87 = 13,442.63 : x
  2. Step 2: Convert to fraction form
    20,604.29/28,425.87 = 13,442.63/x
  3. Step 3: Cross multiply
    20,604.29x = 28,425.87 × 13,442.63
  4. Step 4: Simplify right side
    20,604.29x = 382,118,310.71
  5. Step 5: Solve for x
    x = 382,118,310.71/20,604.29
  6. Step 6: Final answer
    x = 18,545.57

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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.