Home / 12,642.60-18,957.66-3,875.40

Finding the Fourth Proportional to 12,642.60, 18,957.66 and 3,875.40

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Solution

The fourth proportional to 12,642.60, 18,957.66 and 3,875.40 is: 5,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.60 : 18,957.66 = 3,875.40 : x
  2. Step 2: Convert to fraction form
    12,642.60/18,957.66 = 3,875.40/x
  3. Step 3: Cross multiply
    12,642.60x = 18,957.66 × 3,875.40
  4. Step 4: Simplify right side
    12,642.60x = 73,468,448.79
  5. Step 5: Solve for x
    x = 73,468,448.79/12,642.60
  6. Step 6: Final answer
    x = 5,811.18

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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.