Home / 11,122.79-16,665.71-7,828.95

Finding the Fourth Proportional to 11,122.79, 16,665.71 and 7,828.95

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Solution

The fourth proportional to 11,122.79, 16,665.71 and 7,828.95 is: 11,730.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.79 : 16,665.71 = 7,828.95 : x
  2. Step 2: Convert to fraction form
    11,122.79/16,665.71 = 7,828.95/x
  3. Step 3: Cross multiply
    11,122.79x = 16,665.71 × 7,828.95
  4. Step 4: Simplify right side
    11,122.79x = 130,474,971.16
  5. Step 5: Solve for x
    x = 130,474,971.16/11,122.79
  6. Step 6: Final answer
    x = 11,730.42

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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.