Home / 20,281.77-27,988.72-11,329.25

Finding the Fourth Proportional to 20,281.77, 27,988.72 and 11,329.25

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Solution

The fourth proportional to 20,281.77, 27,988.72 and 11,329.25 is: 15,634.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.77 : 27,988.72 = 11,329.25 : x
  2. Step 2: Convert to fraction form
    20,281.77/27,988.72 = 11,329.25/x
  3. Step 3: Cross multiply
    20,281.77x = 27,988.72 × 11,329.25
  4. Step 4: Simplify right side
    20,281.77x = 317,091,101.52
  5. Step 5: Solve for x
    x = 317,091,101.52/20,281.77
  6. Step 6: Final answer
    x = 15,634.29

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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.