Home / 20,796.18-31,167.06-18,157.02

Finding the Fourth Proportional to 20,796.18, 31,167.06 and 18,157.02

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Solution

The fourth proportional to 20,796.18, 31,167.06 and 18,157.02 is: 27,211.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.18 : 31,167.06 = 18,157.02 : x
  2. Step 2: Convert to fraction form
    20,796.18/31,167.06 = 18,157.02/x
  3. Step 3: Cross multiply
    20,796.18x = 31,167.06 × 18,157.02
  4. Step 4: Simplify right side
    20,796.18x = 565,900,931.76
  5. Step 5: Solve for x
    x = 565,900,931.76/20,796.18
  6. Step 6: Final answer
    x = 27,211.77

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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.