Home / 20,807.30-31,146.15-12,016.10

Finding the Fourth Proportional to 20,807.30, 31,146.15 and 12,016.10

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Solution

The fourth proportional to 20,807.30, 31,146.15 and 12,016.10 is: 17,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.30 : 31,146.15 = 12,016.10 : x
  2. Step 2: Convert to fraction form
    20,807.30/31,146.15 = 12,016.10/x
  3. Step 3: Cross multiply
    20,807.30x = 31,146.15 × 12,016.10
  4. Step 4: Simplify right side
    20,807.30x = 374,255,253.02
  5. Step 5: Solve for x
    x = 374,255,253.02/20,807.30
  6. Step 6: Final answer
    x = 17,986.73

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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.