Home / 20,643,655.70-28,489,065.68-11,351,987.54

Finding the Fourth Proportional to 20,643,655.70, 28,489,065.68 and 11,351,987.54

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Solution

The fourth proportional to 20,643,655.70, 28,489,065.68 and 11,351,987.54 is: 15,666,194.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643,655.70 : 28,489,065.68 = 11,351,987.54 : x
  2. Step 2: Convert to fraction form
    20,643,655.70/28,489,065.68 = 11,351,987.54/x
  3. Step 3: Cross multiply
    20,643,655.70x = 28,489,065.68 × 11,351,987.54
  4. Step 4: Simplify right side
    20,643,655.70x = 323,407,518,426,396.38
  5. Step 5: Solve for x
    x = 323,407,518,426,396.38/20,643,655.70
  6. Step 6: Final answer
    x = 15,666,194.17

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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.