Home / 12,200.70-18,260.55-8,859.45

Finding the Fourth Proportional to 12,200.70, 18,260.55 and 8,859.45

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Solution

The fourth proportional to 12,200.70, 18,260.55 and 8,859.45 is: 13,259.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.70 : 18,260.55 = 8,859.45 : x
  2. Step 2: Convert to fraction form
    12,200.70/18,260.55 = 8,859.45/x
  3. Step 3: Cross multiply
    12,200.70x = 18,260.55 × 8,859.45
  4. Step 4: Simplify right side
    12,200.70x = 161,778,429.70
  5. Step 5: Solve for x
    x = 161,778,429.70/12,200.70
  6. Step 6: Final answer
    x = 13,259.77

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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.