Home / 20,868.75-31,282.24-10,346.47

Finding the Fourth Proportional to 20,868.75, 31,282.24 and 10,346.47

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Solution

The fourth proportional to 20,868.75, 31,282.24 and 10,346.47 is: 15,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.75 : 31,282.24 = 10,346.47 : x
  2. Step 2: Convert to fraction form
    20,868.75/31,282.24 = 10,346.47/x
  3. Step 3: Cross multiply
    20,868.75x = 31,282.24 × 10,346.47
  4. Step 4: Simplify right side
    20,868.75x = 323,660,705.96
  5. Step 5: Solve for x
    x = 323,660,705.96/20,868.75
  6. Step 6: Final answer
    x = 15,509.35

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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.