Home / 20,578.55-28,398.95-11,627.37

Finding the Fourth Proportional to 20,578.55, 28,398.95 and 11,627.37

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Solution

The fourth proportional to 20,578.55, 28,398.95 and 11,627.37 is: 16,046.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.55 : 28,398.95 = 11,627.37 : x
  2. Step 2: Convert to fraction form
    20,578.55/28,398.95 = 11,627.37/x
  3. Step 3: Cross multiply
    20,578.55x = 28,398.95 × 11,627.37
  4. Step 4: Simplify right side
    20,578.55x = 330,205,041.12
  5. Step 5: Solve for x
    x = 330,205,041.12/20,578.55
  6. Step 6: Final answer
    x = 16,046.08

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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.