Home / 20,586.40-30,887.70-8,104.30

Finding the Fourth Proportional to 20,586.40, 30,887.70 and 8,104.30

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Solution

The fourth proportional to 20,586.40, 30,887.70 and 8,104.30 is: 12,159.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.40 : 30,887.70 = 8,104.30 : x
  2. Step 2: Convert to fraction form
    20,586.40/30,887.70 = 8,104.30/x
  3. Step 3: Cross multiply
    20,586.40x = 30,887.70 × 8,104.30
  4. Step 4: Simplify right side
    20,586.40x = 250,323,187.11
  5. Step 5: Solve for x
    x = 250,323,187.11/20,586.40
  6. Step 6: Final answer
    x = 12,159.64

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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.