Home / 20,085.19-30,114.69-10,210.75

Finding the Fourth Proportional to 20,085.19, 30,114.69 and 10,210.75

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Solution

The fourth proportional to 20,085.19, 30,114.69 and 10,210.75 is: 15,309.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.19 : 30,114.69 = 10,210.75 : x
  2. Step 2: Convert to fraction form
    20,085.19/30,114.69 = 10,210.75/x
  3. Step 3: Cross multiply
    20,085.19x = 30,114.69 × 10,210.75
  4. Step 4: Simplify right side
    20,085.19x = 307,493,570.92
  5. Step 5: Solve for x
    x = 307,493,570.92/20,085.19
  6. Step 6: Final answer
    x = 15,309.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.