Home / 20,564.39-28,377.14-12,065.63

Finding the Fourth Proportional to 20,564.39, 28,377.14 and 12,065.63

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Solution

The fourth proportional to 20,564.39, 28,377.14 and 12,065.63 is: 16,649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.39 : 28,377.14 = 12,065.63 : x
  2. Step 2: Convert to fraction form
    20,564.39/28,377.14 = 12,065.63/x
  3. Step 3: Cross multiply
    20,564.39x = 28,377.14 × 12,065.63
  4. Step 4: Simplify right side
    20,564.39x = 342,387,869.48
  5. Step 5: Solve for x
    x = 342,387,869.48/20,564.39
  6. Step 6: Final answer
    x = 16,649.56

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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.