Home / 18,721,409.40-28,082,114.10-7,358,081.40

Finding the Fourth Proportional to 18,721,409.40, 28,082,114.10 and 7,358,081.40

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Solution

The fourth proportional to 18,721,409.40, 28,082,114.10 and 7,358,081.40 is: 11,037,122.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,409.40 : 28,082,114.10 = 7,358,081.40 : x
  2. Step 2: Convert to fraction form
    18,721,409.40/28,082,114.10 = 7,358,081.40/x
  3. Step 3: Cross multiply
    18,721,409.40x = 28,082,114.10 × 7,358,081.40
  4. Step 4: Simplify right side
    18,721,409.40x = 206,630,481,431,887.75
  5. Step 5: Solve for x
    x = 206,630,481,431,887.75/18,721,409.40
  6. Step 6: Final answer
    x = 11,037,122.10

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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.