Home / 21,191,710.70-31,787,566.05-19,632,817.10

Finding the Fourth Proportional to 21,191,710.70, 31,787,566.05 and 19,632,817.10

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Solution

The fourth proportional to 21,191,710.70, 31,787,566.05 and 19,632,817.10 is: 29,449,225.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191,710.70 : 31,787,566.05 = 19,632,817.10 : x
  2. Step 2: Convert to fraction form
    21,191,710.70/31,787,566.05 = 19,632,817.10/x
  3. Step 3: Cross multiply
    21,191,710.70x = 31,787,566.05 × 19,632,817.10
  4. Step 4: Simplify right side
    21,191,710.70x = 624,079,470,313,819.50
  5. Step 5: Solve for x
    x = 624,079,470,313,819.50/21,191,710.70
  6. Step 6: Final answer
    x = 29,449,225.65

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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.