Home / 20,365,321.07-28,103,945.50-11,072,891.02

Finding the Fourth Proportional to 20,365,321.07, 28,103,945.50 and 11,072,891.02

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Solution

The fourth proportional to 20,365,321.07, 28,103,945.50 and 11,072,891.02 is: 15,280,482.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365,321.07 : 28,103,945.50 = 11,072,891.02 : x
  2. Step 2: Convert to fraction form
    20,365,321.07/28,103,945.50 = 11,072,891.02/x
  3. Step 3: Cross multiply
    20,365,321.07x = 28,103,945.50 × 11,072,891.02
  4. Step 4: Simplify right side
    20,365,321.07x = 311,191,925,753,519.38
  5. Step 5: Solve for x
    x = 311,191,925,753,519.38/20,365,321.07
  6. Step 6: Final answer
    x = 15,280,482.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.