Home / 20,230.80-27,915.12-11,276.34

Finding the Fourth Proportional to 20,230.80, 27,915.12 and 11,276.34

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Solution

The fourth proportional to 20,230.80, 27,915.12 and 11,276.34 is: 15,559.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.80 : 27,915.12 = 11,276.34 : x
  2. Step 2: Convert to fraction form
    20,230.80/27,915.12 = 11,276.34/x
  3. Step 3: Cross multiply
    20,230.80x = 27,915.12 × 11,276.34
  4. Step 4: Simplify right side
    20,230.80x = 314,780,384.26
  5. Step 5: Solve for x
    x = 314,780,384.26/20,230.80
  6. Step 6: Final answer
    x = 15,559.46

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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.