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Finding the Fourth Proportional to 16,981.79, 25,464.48 and 7,118.42

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Solution

The fourth proportional to 16,981.79, 25,464.48 and 7,118.42 is: 10,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.79 : 25,464.48 = 7,118.42 : x
  2. Step 2: Convert to fraction form
    16,981.79/25,464.48 = 7,118.42/x
  3. Step 3: Cross multiply
    16,981.79x = 25,464.48 × 7,118.42
  4. Step 4: Simplify right side
    16,981.79x = 181,266,736.40
  5. Step 5: Solve for x
    x = 181,266,736.40/16,981.79
  6. Step 6: Final answer
    x = 10,674.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.