Home / 18,977.09-26,191.82-11,320.86

Finding the Fourth Proportional to 18,977.09, 26,191.82 and 11,320.86

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Solution

The fourth proportional to 18,977.09, 26,191.82 and 11,320.86 is: 15,624.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.09 : 26,191.82 = 11,320.86 : x
  2. Step 2: Convert to fraction form
    18,977.09/26,191.82 = 11,320.86/x
  3. Step 3: Cross multiply
    18,977.09x = 26,191.82 × 11,320.86
  4. Step 4: Simplify right side
    18,977.09x = 296,513,870.76
  5. Step 5: Solve for x
    x = 296,513,870.76/18,977.09
  6. Step 6: Final answer
    x = 15,624.84

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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.