Home / 18,751,013.70-28,126,520.55-5,287,841.70

Finding the Fourth Proportional to 18,751,013.70, 28,126,520.55 and 5,287,841.70

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Solution

The fourth proportional to 18,751,013.70, 28,126,520.55 and 5,287,841.70 is: 7,931,762.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751,013.70 : 28,126,520.55 = 5,287,841.70 : x
  2. Step 2: Convert to fraction form
    18,751,013.70/28,126,520.55 = 5,287,841.70/x
  3. Step 3: Cross multiply
    18,751,013.70x = 28,126,520.55 × 5,287,841.70
  4. Step 4: Simplify right side
    18,751,013.70x = 148,728,588,240,196.94
  5. Step 5: Solve for x
    x = 148,728,588,240,196.94/18,751,013.70
  6. Step 6: Final answer
    x = 7,931,762.55

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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.