Home / 20,085.28-30,146.40-10,231.62

Finding the Fourth Proportional to 20,085.28, 30,146.40 and 10,231.62

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Solution

The fourth proportional to 20,085.28, 30,146.40 and 10,231.62 is: 15,356.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.28 : 30,146.40 = 10,231.62 : x
  2. Step 2: Convert to fraction form
    20,085.28/30,146.40 = 10,231.62/x
  3. Step 3: Cross multiply
    20,085.28x = 30,146.40 × 10,231.62
  4. Step 4: Simplify right side
    20,085.28x = 308,446,509.17
  5. Step 5: Solve for x
    x = 308,446,509.17/20,085.28
  6. Step 6: Final answer
    x = 15,356.84

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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.