Home / 12,920,615.65-17,831,243.87-7,119,395.88

Finding the Fourth Proportional to 12,920,615.65, 17,831,243.87 and 7,119,395.88

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Solution

The fourth proportional to 12,920,615.65, 17,831,243.87 and 7,119,395.88 is: 9,825,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,615.65 : 17,831,243.87 = 7,119,395.88 : x
  2. Step 2: Convert to fraction form
    12,920,615.65/17,831,243.87 = 7,119,395.88/x
  3. Step 3: Cross multiply
    12,920,615.65x = 17,831,243.87 × 7,119,395.88
  4. Step 4: Simplify right side
    12,920,615.65x = 126,947,684,143,353.27
  5. Step 5: Solve for x
    x = 126,947,684,143,353.27/12,920,615.65
  6. Step 6: Final answer
    x = 9,825,203.97

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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.