Home / 15,480,920.40-21,364,081.14-8,511,891.84

Finding the Fourth Proportional to 15,480,920.40, 21,364,081.14 and 8,511,891.84

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Solution

The fourth proportional to 15,480,920.40, 21,364,081.14 and 8,511,891.84 is: 11,746,636.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,480,920.40 : 21,364,081.14 = 8,511,891.84 : x
  2. Step 2: Convert to fraction form
    15,480,920.40/21,364,081.14 = 8,511,891.84/x
  3. Step 3: Cross multiply
    15,480,920.40x = 21,364,081.14 × 8,511,891.84
  4. Step 4: Simplify right side
    15,480,920.40x = 181,848,747,924,663.91
  5. Step 5: Solve for x
    x = 181,848,747,924,663.91/15,480,920.40
  6. Step 6: Final answer
    x = 11,746,636.71

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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.