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Finding the Fourth Proportional to 15,053.18, 20,771.42 and 8,680.01

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Solution

The fourth proportional to 15,053.18, 20,771.42 and 8,680.01 is: 11,977.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,053.18 : 20,771.42 = 8,680.01 : x
  2. Step 2: Convert to fraction form
    15,053.18/20,771.42 = 8,680.01/x
  3. Step 3: Cross multiply
    15,053.18x = 20,771.42 × 8,680.01
  4. Step 4: Simplify right side
    15,053.18x = 180,296,206.94
  5. Step 5: Solve for x
    x = 180,296,206.94/15,053.18
  6. Step 6: Final answer
    x = 11,977.28

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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.