Home / 12,479.31-17,220.71-6,812.93

Finding the Fourth Proportional to 12,479.31, 17,220.71 and 6,812.93

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Solution

The fourth proportional to 12,479.31, 17,220.71 and 6,812.93 is: 9,401.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.31 : 17,220.71 = 6,812.93 : x
  2. Step 2: Convert to fraction form
    12,479.31/17,220.71 = 6,812.93/x
  3. Step 3: Cross multiply
    12,479.31x = 17,220.71 × 6,812.93
  4. Step 4: Simplify right side
    12,479.31x = 117,323,491.78
  5. Step 5: Solve for x
    x = 117,323,491.78/12,479.31
  6. Step 6: Final answer
    x = 9,401.44

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1.5x scale

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.