Home / 20,427.81-30,626.15-10,560.80

Finding the Fourth Proportional to 20,427.81, 30,626.15 and 10,560.80

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Solution

The fourth proportional to 20,427.81, 30,626.15 and 10,560.80 is: 15,833.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.81 : 30,626.15 = 10,560.80 : x
  2. Step 2: Convert to fraction form
    20,427.81/30,626.15 = 10,560.80/x
  3. Step 3: Cross multiply
    20,427.81x = 30,626.15 × 10,560.80
  4. Step 4: Simplify right side
    20,427.81x = 323,436,438.99
  5. Step 5: Solve for x
    x = 323,436,438.99/20,427.81
  6. Step 6: Final answer
    x = 15,833.14

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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.