Home / 20,187.40-30,285.42-8,506.12

Finding the Fourth Proportional to 20,187.40, 30,285.42 and 8,506.12

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Solution

The fourth proportional to 20,187.40, 30,285.42 and 8,506.12 is: 12,761.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.40 : 30,285.42 = 8,506.12 : x
  2. Step 2: Convert to fraction form
    20,187.40/30,285.42 = 8,506.12/x
  3. Step 3: Cross multiply
    20,187.40x = 30,285.42 × 8,506.12
  4. Step 4: Simplify right side
    20,187.40x = 257,611,416.77
  5. Step 5: Solve for x
    x = 257,611,416.77/20,187.40
  6. Step 6: Final answer
    x = 12,761.00

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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.