Home / 18,878.86-26,051.28-11,116.44

Finding the Fourth Proportional to 18,878.86, 26,051.28 and 11,116.44

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Solution

The fourth proportional to 18,878.86, 26,051.28 and 11,116.44 is: 15,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.86 : 26,051.28 = 11,116.44 : x
  2. Step 2: Convert to fraction form
    18,878.86/26,051.28 = 11,116.44/x
  3. Step 3: Cross multiply
    18,878.86x = 26,051.28 × 11,116.44
  4. Step 4: Simplify right side
    18,878.86x = 289,597,491.04
  5. Step 5: Solve for x
    x = 289,597,491.04/18,878.86
  6. Step 6: Final answer
    x = 15,339.78

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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.