Home / 20,190.60-27,862.79-11,807.10

Finding the Fourth Proportional to 20,190.60, 27,862.79 and 11,807.10

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Solution

The fourth proportional to 20,190.60, 27,862.79 and 11,807.10 is: 16,293.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.60 : 27,862.79 = 11,807.10 : x
  2. Step 2: Convert to fraction form
    20,190.60/27,862.79 = 11,807.10/x
  3. Step 3: Cross multiply
    20,190.60x = 27,862.79 × 11,807.10
  4. Step 4: Simplify right side
    20,190.60x = 328,978,688.77
  5. Step 5: Solve for x
    x = 328,978,688.77/20,190.60
  6. Step 6: Final answer
    x = 16,293.66

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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.