Home / 12,642,937.20-17,445,376.52-7,678,795.30

Finding the Fourth Proportional to 12,642,937.20, 17,445,376.52 and 7,678,795.30

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Solution

The fourth proportional to 12,642,937.20, 17,445,376.52 and 7,678,795.30 is: 10,595,597.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642,937.20 : 17,445,376.52 = 7,678,795.30 : x
  2. Step 2: Convert to fraction form
    12,642,937.20/17,445,376.52 = 7,678,795.30/x
  3. Step 3: Cross multiply
    12,642,937.20x = 17,445,376.52 × 7,678,795.30
  4. Step 4: Simplify right side
    12,642,937.20x = 133,959,475,269,510.06
  5. Step 5: Solve for x
    x = 133,959,475,269,510.06/12,642,937.20
  6. Step 6: Final answer
    x = 10,595,597.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.