Home / 12,240.79-18,344.02-5,211.29

Finding the Fourth Proportional to 12,240.79, 18,344.02 and 5,211.29

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Solution

The fourth proportional to 12,240.79, 18,344.02 and 5,211.29 is: 7,809.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.79 : 18,344.02 = 5,211.29 : x
  2. Step 2: Convert to fraction form
    12,240.79/18,344.02 = 5,211.29/x
  3. Step 3: Cross multiply
    12,240.79x = 18,344.02 × 5,211.29
  4. Step 4: Simplify right side
    12,240.79x = 95,596,007.99
  5. Step 5: Solve for x
    x = 95,596,007.99/12,240.79
  6. Step 6: Final answer
    x = 7,809.63

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1.5x scale

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.