Home / 20,455.28-30,659.88-10,074.32

Finding the Fourth Proportional to 20,455.28, 30,659.88 and 10,074.32

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Solution

The fourth proportional to 20,455.28, 30,659.88 and 10,074.32 is: 15,100.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.28 : 30,659.88 = 10,074.32 : x
  2. Step 2: Convert to fraction form
    20,455.28/30,659.88 = 10,074.32/x
  3. Step 3: Cross multiply
    20,455.28x = 30,659.88 × 10,074.32
  4. Step 4: Simplify right side
    20,455.28x = 308,877,442.28
  5. Step 5: Solve for x
    x = 308,877,442.28/20,455.28
  6. Step 6: Final answer
    x = 15,100.13

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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.