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Finding the Fourth Proportional to 20,059.76, 27,681.42 and 11,107.10

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Solution

The fourth proportional to 20,059.76, 27,681.42 and 11,107.10 is: 15,327.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,059.76 : 27,681.42 = 11,107.10 : x
  2. Step 2: Convert to fraction form
    20,059.76/27,681.42 = 11,107.10/x
  3. Step 3: Cross multiply
    20,059.76x = 27,681.42 × 11,107.10
  4. Step 4: Simplify right side
    20,059.76x = 307,460,300.08
  5. Step 5: Solve for x
    x = 307,460,300.08/20,059.76
  6. Step 6: Final answer
    x = 15,327.22

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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.