Home / 13,920.58-20,881.85-5,600.63

Finding the Fourth Proportional to 13,920.58, 20,881.85 and 5,600.63

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Solution

The fourth proportional to 13,920.58, 20,881.85 and 5,600.63 is: 8,401.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.58 : 20,881.85 = 5,600.63 : x
  2. Step 2: Convert to fraction form
    13,920.58/20,881.85 = 5,600.63/x
  3. Step 3: Cross multiply
    13,920.58x = 20,881.85 × 5,600.63
  4. Step 4: Simplify right side
    13,920.58x = 116,951,515.57
  5. Step 5: Solve for x
    x = 116,951,515.57/13,920.58
  6. Step 6: Final answer
    x = 8,401.34

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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.