Home / 19,117.11-26,381.79-11,157.80

Finding the Fourth Proportional to 19,117.11, 26,381.79 and 11,157.80

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Solution

The fourth proportional to 19,117.11, 26,381.79 and 11,157.80 is: 15,397.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.11 : 26,381.79 = 11,157.80 : x
  2. Step 2: Convert to fraction form
    19,117.11/26,381.79 = 11,157.80/x
  3. Step 3: Cross multiply
    19,117.11x = 26,381.79 × 11,157.80
  4. Step 4: Simplify right side
    19,117.11x = 294,362,604.55
  5. Step 5: Solve for x
    x = 294,362,604.55/19,117.11
  6. Step 6: Final answer
    x = 15,397.86

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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.