Home / 11,929.79-17,889.06-4,428.15

Finding the Fourth Proportional to 11,929.79, 17,889.06 and 4,428.15

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Solution

The fourth proportional to 11,929.79, 17,889.06 and 4,428.15 is: 6,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.79 : 17,889.06 = 4,428.15 : x
  2. Step 2: Convert to fraction form
    11,929.79/17,889.06 = 4,428.15/x
  3. Step 3: Cross multiply
    11,929.79x = 17,889.06 × 4,428.15
  4. Step 4: Simplify right side
    11,929.79x = 79,215,441.04
  5. Step 5: Solve for x
    x = 79,215,441.04/11,929.79
  6. Step 6: Final answer
    x = 6,640.14

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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.