Home / 12,746.57-19,118.63-3,386.81

Finding the Fourth Proportional to 12,746.57, 19,118.63 and 3,386.81

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Solution

The fourth proportional to 12,746.57, 19,118.63 and 3,386.81 is: 5,079.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.57 : 19,118.63 = 3,386.81 : x
  2. Step 2: Convert to fraction form
    12,746.57/19,118.63 = 3,386.81/x
  3. Step 3: Cross multiply
    12,746.57x = 19,118.63 × 3,386.81
  4. Step 4: Simplify right side
    12,746.57x = 64,751,223.53
  5. Step 5: Solve for x
    x = 64,751,223.53/12,746.57
  6. Step 6: Final answer
    x = 5,079.90

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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.