Home / 19,117.70-26,377.81-11,155.38

Finding the Fourth Proportional to 19,117.70, 26,377.81 and 11,155.38

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Solution

The fourth proportional to 19,117.70, 26,377.81 and 11,155.38 is: 15,391.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.70 : 26,377.81 = 11,155.38 : x
  2. Step 2: Convert to fraction form
    19,117.70/26,377.81 = 11,155.38/x
  3. Step 3: Cross multiply
    19,117.70x = 26,377.81 × 11,155.38
  4. Step 4: Simplify right side
    19,117.70x = 294,254,494.12
  5. Step 5: Solve for x
    x = 294,254,494.12/19,117.70
  6. Step 6: Final answer
    x = 15,391.73

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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.