Home / 23,121.52-31,908.32-13,690.08

Finding the Fourth Proportional to 23,121.52, 31,908.32 and 13,690.08

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Solution

The fourth proportional to 23,121.52, 31,908.32 and 13,690.08 is: 18,892.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.52 : 31,908.32 = 13,690.08 : x
  2. Step 2: Convert to fraction form
    23,121.52/31,908.32 = 13,690.08/x
  3. Step 3: Cross multiply
    23,121.52x = 31,908.32 × 13,690.08
  4. Step 4: Simplify right side
    23,121.52x = 436,827,453.47
  5. Step 5: Solve for x
    x = 436,827,453.47/23,121.52
  6. Step 6: Final answer
    x = 18,892.68

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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.