Home / 20,188.32-30,291.12-18,468.96

Finding the Fourth Proportional to 20,188.32, 30,291.12 and 18,468.96

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Solution

The fourth proportional to 20,188.32, 30,291.12 and 18,468.96 is: 27,711.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.32 : 30,291.12 = 18,468.96 : x
  2. Step 2: Convert to fraction form
    20,188.32/30,291.12 = 18,468.96/x
  3. Step 3: Cross multiply
    20,188.32x = 30,291.12 × 18,468.96
  4. Step 4: Simplify right side
    20,188.32x = 559,445,483.64
  5. Step 5: Solve for x
    x = 559,445,483.64/20,188.32
  6. Step 6: Final answer
    x = 27,711.34

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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.