Home / 16,979.88-25,436.64-11,118.72

Finding the Fourth Proportional to 16,979.88, 25,436.64 and 11,118.72

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Solution

The fourth proportional to 16,979.88, 25,436.64 and 11,118.72 is: 16,656.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.88 : 25,436.64 = 11,118.72 : x
  2. Step 2: Convert to fraction form
    16,979.88/25,436.64 = 11,118.72/x
  3. Step 3: Cross multiply
    16,979.88x = 25,436.64 × 11,118.72
  4. Step 4: Simplify right side
    16,979.88x = 282,822,877.90
  5. Step 5: Solve for x
    x = 282,822,877.90/16,979.88
  6. Step 6: Final answer
    x = 16,656.35

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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.