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Finding the Fourth Proportional to 16,661.52, 24,979.95 and 7,886.16

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Solution

The fourth proportional to 16,661.52, 24,979.95 and 7,886.16 is: 11,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,661.52 : 24,979.95 = 7,886.16 : x
  2. Step 2: Convert to fraction form
    16,661.52/24,979.95 = 7,886.16/x
  3. Step 3: Cross multiply
    16,661.52x = 24,979.95 × 7,886.16
  4. Step 4: Simplify right side
    16,661.52x = 196,995,882.49
  5. Step 5: Solve for x
    x = 196,995,882.49/16,661.52
  6. Step 6: Final answer
    x = 11,823.40

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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.