Home / 19,815.45-27,347.27-11,318.84

Finding the Fourth Proportional to 19,815.45, 27,347.27 and 11,318.84

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Solution

The fourth proportional to 19,815.45, 27,347.27 and 11,318.84 is: 15,621.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.45 : 27,347.27 = 11,318.84 : x
  2. Step 2: Convert to fraction form
    19,815.45/27,347.27 = 11,318.84/x
  3. Step 3: Cross multiply
    19,815.45x = 27,347.27 × 11,318.84
  4. Step 4: Simplify right side
    19,815.45x = 309,539,305.20
  5. Step 5: Solve for x
    x = 309,539,305.20/19,815.45
  6. Step 6: Final answer
    x = 15,621.11

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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.