Home / 12,878.28-19,318.95-4,556.58

Finding the Fourth Proportional to 12,878.28, 19,318.95 and 4,556.58

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Solution

The fourth proportional to 12,878.28, 19,318.95 and 4,556.58 is: 6,835.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.28 : 19,318.95 = 4,556.58 : x
  2. Step 2: Convert to fraction form
    12,878.28/19,318.95 = 4,556.58/x
  3. Step 3: Cross multiply
    12,878.28x = 19,318.95 × 4,556.58
  4. Step 4: Simplify right side
    12,878.28x = 88,028,341.19
  5. Step 5: Solve for x
    x = 88,028,341.19/12,878.28
  6. Step 6: Final answer
    x = 6,835.41

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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.