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Finding the Fourth Proportional to 22,010.40, 32,919.60 and 19,687.20

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Solution

The fourth proportional to 22,010.40, 32,919.60 and 19,687.20 is: 29,444.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,010.40 : 32,919.60 = 19,687.20 : x
  2. Step 2: Convert to fraction form
    22,010.40/32,919.60 = 19,687.20/x
  3. Step 3: Cross multiply
    22,010.40x = 32,919.60 × 19,687.20
  4. Step 4: Simplify right side
    22,010.40x = 648,094,749.12
  5. Step 5: Solve for x
    x = 648,094,749.12/22,010.40
  6. Step 6: Final answer
    x = 29,444.93

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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.