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Finding the Fourth Proportional to 20,070, 27,662.04 and 18,866.16

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Solution

The fourth proportional to 20,070, 27,662.04 and 18,866.16 is: 26,002.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070 : 27,662.04 = 18,866.16 : x
  2. Step 2: Convert to fraction form
    20,070/27,662.04 = 18,866.16/x
  3. Step 3: Cross multiply
    20,070x = 27,662.04 × 18,866.16
  4. Step 4: Simplify right side
    20,070x = 521,876,472.57
  5. Step 5: Solve for x
    x = 521,876,472.57/20,070
  6. Step 6: Final answer
    x = 26,002.81

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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.