Home / 20,281.91-27,988.07-11,327.63

Finding the Fourth Proportional to 20,281.91, 27,988.07 and 11,327.63

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Solution

The fourth proportional to 20,281.91, 27,988.07 and 11,327.63 is: 15,631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.91 : 27,988.07 = 11,327.63 : x
  2. Step 2: Convert to fraction form
    20,281.91/27,988.07 = 11,327.63/x
  3. Step 3: Cross multiply
    20,281.91x = 27,988.07 × 11,327.63
  4. Step 4: Simplify right side
    20,281.91x = 317,038,304.80
  5. Step 5: Solve for x
    x = 317,038,304.80/20,281.91
  6. Step 6: Final answer
    x = 15,631.58

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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.