Home / 20,681,388.84-28,532,929.14-11,974,809

Finding the Fourth Proportional to 20,681,388.84, 28,532,929.14 and 11,974,809

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Solution

The fourth proportional to 20,681,388.84, 28,532,929.14 and 11,974,809 is: 16,520,958.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681,388.84 : 28,532,929.14 = 11,974,809 : x
  2. Step 2: Convert to fraction form
    20,681,388.84/28,532,929.14 = 11,974,809/x
  3. Step 3: Cross multiply
    20,681,388.84x = 28,532,929.14 × 11,974,809
  4. Step 4: Simplify right side
    20,681,388.84x = 341,676,376,662,034.25
  5. Step 5: Solve for x
    x = 341,676,376,662,034.25/20,681,388.84
  6. Step 6: Final answer
    x = 16,520,958.98

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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.