Home / 12,642.66-18,957.75-3,875.46

Finding the Fourth Proportional to 12,642.66, 18,957.75 and 3,875.46

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Solution

The fourth proportional to 12,642.66, 18,957.75 and 3,875.46 is: 5,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.66 : 18,957.75 = 3,875.46 : x
  2. Step 2: Convert to fraction form
    12,642.66/18,957.75 = 3,875.46/x
  3. Step 3: Cross multiply
    12,642.66x = 18,957.75 × 3,875.46
  4. Step 4: Simplify right side
    12,642.66x = 73,470,001.82
  5. Step 5: Solve for x
    x = 73,470,001.82/12,642.66
  6. Step 6: Final answer
    x = 5,811.28

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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.