Home / 12,214.70-18,285.60-7,281.80

Finding the Fourth Proportional to 12,214.70, 18,285.60 and 7,281.80

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Solution

The fourth proportional to 12,214.70, 18,285.60 and 7,281.80 is: 10,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.70 : 18,285.60 = 7,281.80 : x
  2. Step 2: Convert to fraction form
    12,214.70/18,285.60 = 7,281.80/x
  3. Step 3: Cross multiply
    12,214.70x = 18,285.60 × 7,281.80
  4. Step 4: Simplify right side
    12,214.70x = 133,152,082.08
  5. Step 5: Solve for x
    x = 133,152,082.08/12,214.70
  6. Step 6: Final answer
    x = 10,900.97

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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.