Home / 39,872.16-59,808.12-18,805.20

Finding the Fourth Proportional to 39,872.16, 59,808.12 and 18,805.20

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Solution

The fourth proportional to 39,872.16, 59,808.12 and 18,805.20 is: 28,207.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872.16 : 59,808.12 = 18,805.20 : x
  2. Step 2: Convert to fraction form
    39,872.16/59,808.12 = 18,805.20/x
  3. Step 3: Cross multiply
    39,872.16x = 59,808.12 × 18,805.20
  4. Step 4: Simplify right side
    39,872.16x = 1,124,703,658.22
  5. Step 5: Solve for x
    x = 1,124,703,658.22/39,872.16
  6. Step 6: Final answer
    x = 28,207.74

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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.