Home / 43,931.28-65,905.20-17,638.08

Finding the Fourth Proportional to 43,931.28, 65,905.20 and 17,638.08

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Solution

The fourth proportional to 43,931.28, 65,905.20 and 17,638.08 is: 26,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,931.28 : 65,905.20 = 17,638.08 : x
  2. Step 2: Convert to fraction form
    43,931.28/65,905.20 = 17,638.08/x
  3. Step 3: Cross multiply
    43,931.28x = 65,905.20 × 17,638.08
  4. Step 4: Simplify right side
    43,931.28x = 1,162,441,190.02
  5. Step 5: Solve for x
    x = 1,162,441,190.02/43,931.28
  6. Step 6: Final answer
    x = 26,460.44

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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.