Home / 20,319.68-30,455.16-10,463.60

Finding the Fourth Proportional to 20,319.68, 30,455.16 and 10,463.60

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Solution

The fourth proportional to 20,319.68, 30,455.16 and 10,463.60 is: 15,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.68 : 30,455.16 = 10,463.60 : x
  2. Step 2: Convert to fraction form
    20,319.68/30,455.16 = 10,463.60/x
  3. Step 3: Cross multiply
    20,319.68x = 30,455.16 × 10,463.60
  4. Step 4: Simplify right side
    20,319.68x = 318,670,612.18
  5. Step 5: Solve for x
    x = 318,670,612.18/20,319.68
  6. Step 6: Final answer
    x = 15,682.86

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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.