Home / 20,155.70-30,233.55-10,314.20

Finding the Fourth Proportional to 20,155.70, 30,233.55 and 10,314.20

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Solution

The fourth proportional to 20,155.70, 30,233.55 and 10,314.20 is: 15,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.70 : 30,233.55 = 10,314.20 : x
  2. Step 2: Convert to fraction form
    20,155.70/30,233.55 = 10,314.20/x
  3. Step 3: Cross multiply
    20,155.70x = 30,233.55 × 10,314.20
  4. Step 4: Simplify right side
    20,155.70x = 311,834,881.41
  5. Step 5: Solve for x
    x = 311,834,881.41/20,155.70
  6. Step 6: Final answer
    x = 15,471.30

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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.