Home / 13,888.78-20,828.84-4,028.74

Finding the Fourth Proportional to 13,888.78, 20,828.84 and 4,028.74

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Solution

The fourth proportional to 13,888.78, 20,828.84 and 4,028.74 is: 6,041.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.78 : 20,828.84 = 4,028.74 : x
  2. Step 2: Convert to fraction form
    13,888.78/20,828.84 = 4,028.74/x
  3. Step 3: Cross multiply
    13,888.78x = 20,828.84 × 4,028.74
  4. Step 4: Simplify right side
    13,888.78x = 83,913,980.86
  5. Step 5: Solve for x
    x = 83,913,980.86/13,888.78
  6. Step 6: Final answer
    x = 6,041.85

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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.