Home / 13,919.54-20,880.32-3,925.76

Finding the Fourth Proportional to 13,919.54, 20,880.32 and 3,925.76

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Solution

The fourth proportional to 13,919.54, 20,880.32 and 3,925.76 is: 5,888.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.54 : 20,880.32 = 3,925.76 : x
  2. Step 2: Convert to fraction form
    13,919.54/20,880.32 = 3,925.76/x
  3. Step 3: Cross multiply
    13,919.54x = 20,880.32 × 3,925.76
  4. Step 4: Simplify right side
    13,919.54x = 81,971,001.01
  5. Step 5: Solve for x
    x = 81,971,001.01/13,919.54
  6. Step 6: Final answer
    x = 5,888.92

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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.