Home / 30,207.61-45,340.25-18,543.61

Finding the Fourth Proportional to 30,207.61, 45,340.25 and 18,543.61

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Solution

The fourth proportional to 30,207.61, 45,340.25 and 18,543.61 is: 27,833.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.61 : 45,340.25 = 18,543.61 : x
  2. Step 2: Convert to fraction form
    30,207.61/45,340.25 = 18,543.61/x
  3. Step 3: Cross multiply
    30,207.61x = 45,340.25 × 18,543.61
  4. Step 4: Simplify right side
    30,207.61x = 840,771,913.30
  5. Step 5: Solve for x
    x = 840,771,913.30/30,207.61
  6. Step 6: Final answer
    x = 27,833.12

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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.