Home / 19,811.60-27,339-10,857.52

Finding the Fourth Proportional to 19,811.60, 27,339 and 10,857.52

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Solution

The fourth proportional to 19,811.60, 27,339 and 10,857.52 is: 14,982.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.60 : 27,339 = 10,857.52 : x
  2. Step 2: Convert to fraction form
    19,811.60/27,339 = 10,857.52/x
  3. Step 3: Cross multiply
    19,811.60x = 27,339 × 10,857.52
  4. Step 4: Simplify right side
    19,811.60x = 296,833,739.28
  5. Step 5: Solve for x
    x = 296,833,739.28/19,811.60
  6. Step 6: Final answer
    x = 14,982.83

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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.