Home / 18,981.72-26,196.24-13,968.90

Finding the Fourth Proportional to 18,981.72, 26,196.24 and 13,968.90

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Solution

The fourth proportional to 18,981.72, 26,196.24 and 13,968.90 is: 19,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.72 : 26,196.24 = 13,968.90 : x
  2. Step 2: Convert to fraction form
    18,981.72/26,196.24 = 13,968.90/x
  3. Step 3: Cross multiply
    18,981.72x = 26,196.24 × 13,968.90
  4. Step 4: Simplify right side
    18,981.72x = 365,932,656.94
  5. Step 5: Solve for x
    x = 365,932,656.94/18,981.72
  6. Step 6: Final answer
    x = 19,278.16

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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.