Home / 15,516.70-21,412.56-8,802.94

Finding the Fourth Proportional to 15,516.70, 21,412.56 and 8,802.94

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Solution

The fourth proportional to 15,516.70, 21,412.56 and 8,802.94 is: 12,147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.70 : 21,412.56 = 8,802.94 : x
  2. Step 2: Convert to fraction form
    15,516.70/21,412.56 = 8,802.94/x
  3. Step 3: Cross multiply
    15,516.70x = 21,412.56 × 8,802.94
  4. Step 4: Simplify right side
    15,516.70x = 188,493,480.93
  5. Step 5: Solve for x
    x = 188,493,480.93/15,516.70
  6. Step 6: Final answer
    x = 12,147.78

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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.