Home / 18,919.78-26,103.40-10,742.02

Finding the Fourth Proportional to 18,919.78, 26,103.40 and 10,742.02

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Solution

The fourth proportional to 18,919.78, 26,103.40 and 10,742.02 is: 14,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.78 : 26,103.40 = 10,742.02 : x
  2. Step 2: Convert to fraction form
    18,919.78/26,103.40 = 10,742.02/x
  3. Step 3: Cross multiply
    18,919.78x = 26,103.40 × 10,742.02
  4. Step 4: Simplify right side
    18,919.78x = 280,403,152.75
  5. Step 5: Solve for x
    x = 280,403,152.75/18,919.78
  6. Step 6: Final answer
    x = 14,820.64

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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.