Home / 20,158.08-27,810.78-12,197.40

Finding the Fourth Proportional to 20,158.08, 27,810.78 and 12,197.40

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Solution

The fourth proportional to 20,158.08, 27,810.78 and 12,197.40 is: 16,827.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.08 : 27,810.78 = 12,197.40 : x
  2. Step 2: Convert to fraction form
    20,158.08/27,810.78 = 12,197.40/x
  3. Step 3: Cross multiply
    20,158.08x = 27,810.78 × 12,197.40
  4. Step 4: Simplify right side
    20,158.08x = 339,219,207.97
  5. Step 5: Solve for x
    x = 339,219,207.97/20,158.08
  6. Step 6: Final answer
    x = 16,827.95

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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.