Home / 20,054,428.20-30,081,642.30-18,778,969.80

Finding the Fourth Proportional to 20,054,428.20, 30,081,642.30 and 18,778,969.80

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Solution

The fourth proportional to 20,054,428.20, 30,081,642.30 and 18,778,969.80 is: 28,168,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,054,428.20 : 30,081,642.30 = 18,778,969.80 : x
  2. Step 2: Convert to fraction form
    20,054,428.20/30,081,642.30 = 18,778,969.80/x
  3. Step 3: Cross multiply
    20,054,428.20x = 30,081,642.30 × 18,778,969.80
  4. Step 4: Simplify right side
    20,054,428.20x = 564,902,252,286,102.62
  5. Step 5: Solve for x
    x = 564,902,252,286,102.62/20,054,428.20
  6. Step 6: Final answer
    x = 28,168,454.70

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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.