Home / 20,219.55-30,335.24-10,365.69

Finding the Fourth Proportional to 20,219.55, 30,335.24 and 10,365.69

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Solution

The fourth proportional to 20,219.55, 30,335.24 and 10,365.69 is: 15,551.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.55 : 30,335.24 = 10,365.69 : x
  2. Step 2: Convert to fraction form
    20,219.55/30,335.24 = 10,365.69/x
  3. Step 3: Cross multiply
    20,219.55x = 30,335.24 × 10,365.69
  4. Step 4: Simplify right side
    20,219.55x = 314,445,693.92
  5. Step 5: Solve for x
    x = 314,445,693.92/20,219.55
  6. Step 6: Final answer
    x = 15,551.57

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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.