Home / 20,900,728.62-31,353,071.76-8,122,218.84

Finding the Fourth Proportional to 20,900,728.62, 31,353,071.76 and 8,122,218.84

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Solution

The fourth proportional to 20,900,728.62, 31,353,071.76 and 8,122,218.84 is: 12,184,097.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900,728.62 : 31,353,071.76 = 8,122,218.84 : x
  2. Step 2: Convert to fraction form
    20,900,728.62/31,353,071.76 = 8,122,218.84/x
  3. Step 3: Cross multiply
    20,900,728.62x = 31,353,071.76 × 8,122,218.84
  4. Step 4: Simplify right side
    20,900,728.62x = 254,656,510,140,943.97
  5. Step 5: Solve for x
    x = 254,656,510,140,943.97/20,900,728.62
  6. Step 6: Final answer
    x = 12,184,097.25

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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.