Home / 20,170.19-30,254.58-7,689.75

Finding the Fourth Proportional to 20,170.19, 30,254.58 and 7,689.75

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Solution

The fourth proportional to 20,170.19, 30,254.58 and 7,689.75 is: 11,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.19 : 30,254.58 = 7,689.75 : x
  2. Step 2: Convert to fraction form
    20,170.19/30,254.58 = 7,689.75/x
  3. Step 3: Cross multiply
    20,170.19x = 30,254.58 × 7,689.75
  4. Step 4: Simplify right side
    20,170.19x = 232,650,156.56
  5. Step 5: Solve for x
    x = 232,650,156.56/20,170.19
  6. Step 6: Final answer
    x = 11,534.36

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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.