Home / 13,919.93-20,877.05-5,152.76

Finding the Fourth Proportional to 13,919.93, 20,877.05 and 5,152.76

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Solution

The fourth proportional to 13,919.93, 20,877.05 and 5,152.76 is: 7,728.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.93 : 20,877.05 = 5,152.76 : x
  2. Step 2: Convert to fraction form
    13,919.93/20,877.05 = 5,152.76/x
  3. Step 3: Cross multiply
    13,919.93x = 20,877.05 × 5,152.76
  4. Step 4: Simplify right side
    13,919.93x = 107,574,336.65
  5. Step 5: Solve for x
    x = 107,574,336.65/13,919.93
  6. Step 6: Final answer
    x = 7,728.08

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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.