Home / 13,239.38-19,856.05-7,904.07

Finding the Fourth Proportional to 13,239.38, 19,856.05 and 7,904.07

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Solution

The fourth proportional to 13,239.38, 19,856.05 and 7,904.07 is: 11,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.38 : 19,856.05 = 7,904.07 : x
  2. Step 2: Convert to fraction form
    13,239.38/19,856.05 = 7,904.07/x
  3. Step 3: Cross multiply
    13,239.38x = 19,856.05 × 7,904.07
  4. Step 4: Simplify right side
    13,239.38x = 156,943,589.36
  5. Step 5: Solve for x
    x = 156,943,589.36/13,239.38
  6. Step 6: Final answer
    x = 11,854.30

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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.