Home / 20,515.59-28,309.37-11,564.46

Finding the Fourth Proportional to 20,515.59, 28,309.37 and 11,564.46

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Solution

The fourth proportional to 20,515.59, 28,309.37 and 11,564.46 is: 15,957.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.59 : 28,309.37 = 11,564.46 : x
  2. Step 2: Convert to fraction form
    20,515.59/28,309.37 = 11,564.46/x
  3. Step 3: Cross multiply
    20,515.59x = 28,309.37 × 11,564.46
  4. Step 4: Simplify right side
    20,515.59x = 327,382,519.17
  5. Step 5: Solve for x
    x = 327,382,519.17/20,515.59
  6. Step 6: Final answer
    x = 15,957.74

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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.