Home / 28,092.20-42,165.60-21,919.40

Finding the Fourth Proportional to 28,092.20, 42,165.60 and 21,919.40

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Solution

The fourth proportional to 28,092.20, 42,165.60 and 21,919.40 is: 32,900.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,092.20 : 42,165.60 = 21,919.40 : x
  2. Step 2: Convert to fraction form
    28,092.20/42,165.60 = 21,919.40/x
  3. Step 3: Cross multiply
    28,092.20x = 42,165.60 × 21,919.40
  4. Step 4: Simplify right side
    28,092.20x = 924,244,652.64
  5. Step 5: Solve for x
    x = 924,244,652.64/28,092.20
  6. Step 6: Final answer
    x = 32,900.40

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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.