Home / 20,686,560.95-28,547,452.74-11,989,778.09

Finding the Fourth Proportional to 20,686,560.95, 28,547,452.74 and 11,989,778.09

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Solution

The fourth proportional to 20,686,560.95, 28,547,452.74 and 11,989,778.09 is: 16,545,892.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,560.95 : 28,547,452.74 = 11,989,778.09 : x
  2. Step 2: Convert to fraction form
    20,686,560.95/28,547,452.74 = 11,989,778.09/x
  3. Step 3: Cross multiply
    20,686,560.95x = 28,547,452.74 × 11,989,778.09
  4. Step 4: Simplify right side
    20,686,560.95x = 342,277,623,244,625.19
  5. Step 5: Solve for x
    x = 342,277,623,244,625.19/20,686,560.95
  6. Step 6: Final answer
    x = 16,545,892.97

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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.