Home / 21,069,687.49-31,607,061.32-7,420,010.86

Finding the Fourth Proportional to 21,069,687.49, 31,607,061.32 and 7,420,010.86

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Solution

The fourth proportional to 21,069,687.49, 31,607,061.32 and 7,420,010.86 is: 11,130,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,687.49 : 31,607,061.32 = 7,420,010.86 : x
  2. Step 2: Convert to fraction form
    21,069,687.49/31,607,061.32 = 7,420,010.86/x
  3. Step 3: Cross multiply
    21,069,687.49x = 31,607,061.32 × 7,420,010.86
  4. Step 4: Simplify right side
    21,069,687.49x = 234,524,738,247,085.94
  5. Step 5: Solve for x
    x = 234,524,738,247,085.94/21,069,687.49
  6. Step 6: Final answer
    x = 11,130,907.30

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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.