Home / 20,158.63-30,238.02-6,118.78

Finding the Fourth Proportional to 20,158.63, 30,238.02 and 6,118.78

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Solution

The fourth proportional to 20,158.63, 30,238.02 and 6,118.78 is: 9,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.63 : 30,238.02 = 6,118.78 : x
  2. Step 2: Convert to fraction form
    20,158.63/30,238.02 = 6,118.78/x
  3. Step 3: Cross multiply
    20,158.63x = 30,238.02 × 6,118.78
  4. Step 4: Simplify right side
    20,158.63x = 185,019,773.12
  5. Step 5: Solve for x
    x = 185,019,773.12/20,158.63
  6. Step 6: Final answer
    x = 9,178.19

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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.