Home / 28,084,447.20-42,126,670.80-18,518,509.20

Finding the Fourth Proportional to 28,084,447.20, 42,126,670.80 and 18,518,509.20

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Solution

The fourth proportional to 28,084,447.20, 42,126,670.80 and 18,518,509.20 is: 27,777,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084,447.20 : 42,126,670.80 = 18,518,509.20 : x
  2. Step 2: Convert to fraction form
    28,084,447.20/42,126,670.80 = 18,518,509.20/x
  3. Step 3: Cross multiply
    28,084,447.20x = 42,126,670.80 × 18,518,509.20
  4. Step 4: Simplify right side
    28,084,447.20x = 780,123,140,775,171.25
  5. Step 5: Solve for x
    x = 780,123,140,775,171.25/28,084,447.20
  6. Step 6: Final answer
    x = 27,777,763.80

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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.