Home / 39,680.64-59,559.84-18,918.72

Finding the Fourth Proportional to 39,680.64, 59,559.84 and 18,918.72

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Solution

The fourth proportional to 39,680.64, 59,559.84 and 18,918.72 is: 28,396.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.64 : 59,559.84 = 18,918.72 : x
  2. Step 2: Convert to fraction form
    39,680.64/59,559.84 = 18,918.72/x
  3. Step 3: Cross multiply
    39,680.64x = 59,559.84 × 18,918.72
  4. Step 4: Simplify right side
    39,680.64x = 1,126,795,936.20
  5. Step 5: Solve for x
    x = 1,126,795,936.20/39,680.64
  6. Step 6: Final answer
    x = 28,396.62

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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.