Home / 12,220.07-18,330.17-4,428.68

Finding the Fourth Proportional to 12,220.07, 18,330.17 and 4,428.68

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Solution

The fourth proportional to 12,220.07, 18,330.17 and 4,428.68 is: 6,643.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.07 : 18,330.17 = 4,428.68 : x
  2. Step 2: Convert to fraction form
    12,220.07/18,330.17 = 4,428.68/x
  3. Step 3: Cross multiply
    12,220.07x = 18,330.17 × 4,428.68
  4. Step 4: Simplify right side
    12,220.07x = 81,178,343.48
  5. Step 5: Solve for x
    x = 81,178,343.48/12,220.07
  6. Step 6: Final answer
    x = 6,643.04

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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.