Home / 21,054,920.10-31,582,380.15-12,870,728.70

Finding the Fourth Proportional to 21,054,920.10, 31,582,380.15 and 12,870,728.70

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Solution

The fourth proportional to 21,054,920.10, 31,582,380.15 and 12,870,728.70 is: 19,306,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054,920.10 : 31,582,380.15 = 12,870,728.70 : x
  2. Step 2: Convert to fraction form
    21,054,920.10/31,582,380.15 = 12,870,728.70/x
  3. Step 3: Cross multiply
    21,054,920.10x = 31,582,380.15 × 12,870,728.70
  4. Step 4: Simplify right side
    21,054,920.10x = 406,488,246,610,915.25
  5. Step 5: Solve for x
    x = 406,488,246,610,915.25/21,054,920.10
  6. Step 6: Final answer
    x = 19,306,093.05

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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.