Home / 18,667,540.80-28,001,311.20-11,658,643.20

Finding the Fourth Proportional to 18,667,540.80, 28,001,311.20 and 11,658,643.20

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Solution

The fourth proportional to 18,667,540.80, 28,001,311.20 and 11,658,643.20 is: 17,487,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667,540.80 : 28,001,311.20 = 11,658,643.20 : x
  2. Step 2: Convert to fraction form
    18,667,540.80/28,001,311.20 = 11,658,643.20/x
  3. Step 3: Cross multiply
    18,667,540.80x = 28,001,311.20 × 11,658,643.20
  4. Step 4: Simplify right side
    18,667,540.80x = 326,457,296,412,963.81
  5. Step 5: Solve for x
    x = 326,457,296,412,963.81/18,667,540.80
  6. Step 6: Final answer
    x = 17,487,964.80

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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.