Home / 21,066,414.30-31,599,621.45-12,988,511.10

Finding the Fourth Proportional to 21,066,414.30, 31,599,621.45 and 12,988,511.10

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Solution

The fourth proportional to 21,066,414.30, 31,599,621.45 and 12,988,511.10 is: 19,482,766.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066,414.30 : 31,599,621.45 = 12,988,511.10 : x
  2. Step 2: Convert to fraction form
    21,066,414.30/31,599,621.45 = 12,988,511.10/x
  3. Step 3: Cross multiply
    21,066,414.30x = 31,599,621.45 × 12,988,511.10
  4. Step 4: Simplify right side
    21,066,414.30x = 410,432,033,959,123.06
  5. Step 5: Solve for x
    x = 410,432,033,959,123.06/21,066,414.30
  6. Step 6: Final answer
    x = 19,482,766.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.