Home / 19,884.80-27,442.48-13,158.72

Finding the Fourth Proportional to 19,884.80, 27,442.48 and 13,158.72

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Solution

The fourth proportional to 19,884.80, 27,442.48 and 13,158.72 is: 18,160.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,884.80 : 27,442.48 = 13,158.72 : x
  2. Step 2: Convert to fraction form
    19,884.80/27,442.48 = 13,158.72/x
  3. Step 3: Cross multiply
    19,884.80x = 27,442.48 × 13,158.72
  4. Step 4: Simplify right side
    19,884.80x = 361,107,910.43
  5. Step 5: Solve for x
    x = 361,107,910.43/19,884.80
  6. Step 6: Final answer
    x = 18,160.00

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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.