Home / 20,517.04-28,313.51-11,085.60

Finding the Fourth Proportional to 20,517.04, 28,313.51 and 11,085.60

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Solution

The fourth proportional to 20,517.04, 28,313.51 and 11,085.60 is: 15,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.04 : 28,313.51 = 11,085.60 : x
  2. Step 2: Convert to fraction form
    20,517.04/28,313.51 = 11,085.60/x
  3. Step 3: Cross multiply
    20,517.04x = 28,313.51 × 11,085.60
  4. Step 4: Simplify right side
    20,517.04x = 313,872,191.03
  5. Step 5: Solve for x
    x = 313,872,191.03/20,517.04
  6. Step 6: Final answer
    x = 15,298.12

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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.