Home / 20,022.80-27,631.05-11,070.68

Finding the Fourth Proportional to 20,022.80, 27,631.05 and 11,070.68

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Solution

The fourth proportional to 20,022.80, 27,631.05 and 11,070.68 is: 15,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,022.80 : 27,631.05 = 11,070.68 : x
  2. Step 2: Convert to fraction form
    20,022.80/27,631.05 = 11,070.68/x
  3. Step 3: Cross multiply
    20,022.80x = 27,631.05 × 11,070.68
  4. Step 4: Simplify right side
    20,022.80x = 305,894,374.46
  5. Step 5: Solve for x
    x = 305,894,374.46/20,022.80
  6. Step 6: Final answer
    x = 15,277.31

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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.