Home / 20,260.38-27,947.64-12,188.43

Finding the Fourth Proportional to 20,260.38, 27,947.64 and 12,188.43

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Solution

The fourth proportional to 20,260.38, 27,947.64 and 12,188.43 is: 16,813.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.38 : 27,947.64 = 12,188.43 : x
  2. Step 2: Convert to fraction form
    20,260.38/27,947.64 = 12,188.43/x
  3. Step 3: Cross multiply
    20,260.38x = 27,947.64 × 12,188.43
  4. Step 4: Simplify right side
    20,260.38x = 340,637,853.81
  5. Step 5: Solve for x
    x = 340,637,853.81/20,260.38
  6. Step 6: Final answer
    x = 16,813.00

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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.