Home / 20,890,968.10-31,334,594.56-7,243,809.26

Finding the Fourth Proportional to 20,890,968.10, 31,334,594.56 and 7,243,809.26

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Solution

The fourth proportional to 20,890,968.10, 31,334,594.56 and 7,243,809.26 is: 10,865,069.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890,968.10 : 31,334,594.56 = 7,243,809.26 : x
  2. Step 2: Convert to fraction form
    20,890,968.10/31,334,594.56 = 7,243,809.26/x
  3. Step 3: Cross multiply
    20,890,968.10x = 31,334,594.56 × 7,243,809.26
  4. Step 4: Simplify right side
    20,890,968.10x = 226,981,826,232,073.59
  5. Step 5: Solve for x
    x = 226,981,826,232,073.59/20,890,968.10
  6. Step 6: Final answer
    x = 10,865,069.78

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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.