Home / 20,157.61-30,236.39-8,318.04

Finding the Fourth Proportional to 20,157.61, 30,236.39 and 8,318.04

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Solution

The fourth proportional to 20,157.61, 30,236.39 and 8,318.04 is: 12,477.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.61 : 30,236.39 = 8,318.04 : x
  2. Step 2: Convert to fraction form
    20,157.61/30,236.39 = 8,318.04/x
  3. Step 3: Cross multiply
    20,157.61x = 30,236.39 × 8,318.04
  4. Step 4: Simplify right side
    20,157.61x = 251,507,547.77
  5. Step 5: Solve for x
    x = 251,507,547.77/20,157.61
  6. Step 6: Final answer
    x = 12,477.05

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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.