Home / 21,036,809.70-31,555,214.55-20,186,504.10

Finding the Fourth Proportional to 21,036,809.70, 31,555,214.55 and 20,186,504.10

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Solution

The fourth proportional to 21,036,809.70, 31,555,214.55 and 20,186,504.10 is: 30,279,756.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036,809.70 : 31,555,214.55 = 20,186,504.10 : x
  2. Step 2: Convert to fraction form
    21,036,809.70/31,555,214.55 = 20,186,504.10/x
  3. Step 3: Cross multiply
    21,036,809.70x = 31,555,214.55 × 20,186,504.10
  4. Step 4: Simplify right side
    21,036,809.70x = 636,989,467,889,954.75
  5. Step 5: Solve for x
    x = 636,989,467,889,954.75/21,036,809.70
  6. Step 6: Final answer
    x = 30,279,756.15

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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.