Home / 13,233.78-18,257.40-7,929.09

Finding the Fourth Proportional to 13,233.78, 18,257.40 and 7,929.09

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Solution

The fourth proportional to 13,233.78, 18,257.40 and 7,929.09 is: 10,939.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,233.78 : 18,257.40 = 7,929.09 : x
  2. Step 2: Convert to fraction form
    13,233.78/18,257.40 = 7,929.09/x
  3. Step 3: Cross multiply
    13,233.78x = 18,257.40 × 7,929.09
  4. Step 4: Simplify right side
    13,233.78x = 144,764,567.77
  5. Step 5: Solve for x
    x = 144,764,567.77/13,233.78
  6. Step 6: Final answer
    x = 10,939.02

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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.