Home / 19,207.81-26,508.90-11,143.25

Finding the Fourth Proportional to 19,207.81, 26,508.90 and 11,143.25

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Solution

The fourth proportional to 19,207.81, 26,508.90 and 11,143.25 is: 15,378.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.81 : 26,508.90 = 11,143.25 : x
  2. Step 2: Convert to fraction form
    19,207.81/26,508.90 = 11,143.25/x
  3. Step 3: Cross multiply
    19,207.81x = 26,508.90 × 11,143.25
  4. Step 4: Simplify right side
    19,207.81x = 295,395,299.93
  5. Step 5: Solve for x
    x = 295,395,299.93/19,207.81
  6. Step 6: Final answer
    x = 15,378.92

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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.