Home / 12,015.70-16,580.23-6,981.48

Finding the Fourth Proportional to 12,015.70, 16,580.23 and 6,981.48

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Solution

The fourth proportional to 12,015.70, 16,580.23 and 6,981.48 is: 9,633.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.70 : 16,580.23 = 6,981.48 : x
  2. Step 2: Convert to fraction form
    12,015.70/16,580.23 = 6,981.48/x
  3. Step 3: Cross multiply
    12,015.70x = 16,580.23 × 6,981.48
  4. Step 4: Simplify right side
    12,015.70x = 115,754,526.69
  5. Step 5: Solve for x
    x = 115,754,526.69/12,015.70
  6. Step 6: Final answer
    x = 9,633.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.