Home / 25,984,987.80-38,977,481.70-18,678,658.20

Finding the Fourth Proportional to 25,984,987.80, 38,977,481.70 and 18,678,658.20

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Solution

The fourth proportional to 25,984,987.80, 38,977,481.70 and 18,678,658.20 is: 28,017,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,984,987.80 : 38,977,481.70 = 18,678,658.20 : x
  2. Step 2: Convert to fraction form
    25,984,987.80/38,977,481.70 = 18,678,658.20/x
  3. Step 3: Cross multiply
    25,984,987.80x = 38,977,481.70 × 18,678,658.20
  4. Step 4: Simplify right side
    25,984,987.80x = 728,047,058,171,055
  5. Step 5: Solve for x
    x = 728,047,058,171,055/25,984,987.80
  6. Step 6: Final answer
    x = 28,017,987.30

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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.