Home / 28,203.40-42,326.70-20,302.12

Finding the Fourth Proportional to 28,203.40, 42,326.70 and 20,302.12

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Solution

The fourth proportional to 28,203.40, 42,326.70 and 20,302.12 is: 30,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.40 : 42,326.70 = 20,302.12 : x
  2. Step 2: Convert to fraction form
    28,203.40/42,326.70 = 20,302.12/x
  3. Step 3: Cross multiply
    28,203.40x = 42,326.70 × 20,302.12
  4. Step 4: Simplify right side
    28,203.40x = 859,321,742.60
  5. Step 5: Solve for x
    x = 859,321,742.60/28,203.40
  6. Step 6: Final answer
    x = 30,468.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.