Home / 20,479.20-30,653.16-13,803.48

Finding the Fourth Proportional to 20,479.20, 30,653.16 and 13,803.48

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Solution

The fourth proportional to 20,479.20, 30,653.16 and 13,803.48 is: 20,660.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.20 : 30,653.16 = 13,803.48 : x
  2. Step 2: Convert to fraction form
    20,479.20/30,653.16 = 13,803.48/x
  3. Step 3: Cross multiply
    20,479.20x = 30,653.16 × 13,803.48
  4. Step 4: Simplify right side
    20,479.20x = 423,120,281.00
  5. Step 5: Solve for x
    x = 423,120,281.00/20,479.20
  6. Step 6: Final answer
    x = 20,660.98

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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.