Home / 13,920.91-20,886.83-6,124.25

Finding the Fourth Proportional to 13,920.91, 20,886.83 and 6,124.25

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Solution

The fourth proportional to 13,920.91, 20,886.83 and 6,124.25 is: 9,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.91 : 20,886.83 = 6,124.25 : x
  2. Step 2: Convert to fraction form
    13,920.91/20,886.83 = 6,124.25/x
  3. Step 3: Cross multiply
    13,920.91x = 20,886.83 × 6,124.25
  4. Step 4: Simplify right side
    13,920.91x = 127,916,168.63
  5. Step 5: Solve for x
    x = 127,916,168.63/13,920.91
  6. Step 6: Final answer
    x = 9,188.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.