Home / 20,200.40-30,289.80-8,500.40

Finding the Fourth Proportional to 20,200.40, 30,289.80 and 8,500.40

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Solution

The fourth proportional to 20,200.40, 30,289.80 and 8,500.40 is: 12,746.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.40 : 30,289.80 = 8,500.40 : x
  2. Step 2: Convert to fraction form
    20,200.40/30,289.80 = 8,500.40/x
  3. Step 3: Cross multiply
    20,200.40x = 30,289.80 × 8,500.40
  4. Step 4: Simplify right side
    20,200.40x = 257,475,415.92
  5. Step 5: Solve for x
    x = 257,475,415.92/20,200.40
  6. Step 6: Final answer
    x = 12,746.06

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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.