Home / 20,442.40-30,602.48-12,519.97

Finding the Fourth Proportional to 20,442.40, 30,602.48 and 12,519.97

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Solution

The fourth proportional to 20,442.40, 30,602.48 and 12,519.97 is: 18,742.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.40 : 30,602.48 = 12,519.97 : x
  2. Step 2: Convert to fraction form
    20,442.40/30,602.48 = 12,519.97/x
  3. Step 3: Cross multiply
    20,442.40x = 30,602.48 × 12,519.97
  4. Step 4: Simplify right side
    20,442.40x = 383,141,915.91
  5. Step 5: Solve for x
    x = 383,141,915.91/20,442.40
  6. Step 6: Final answer
    x = 18,742.52

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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.