Home / 10,228.86-15,340.02-3,987.36

Finding the Fourth Proportional to 10,228.86, 15,340.02 and 3,987.36

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Solution

The fourth proportional to 10,228.86, 15,340.02 and 3,987.36 is: 5,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,228.86 : 15,340.02 = 3,987.36 : x
  2. Step 2: Convert to fraction form
    10,228.86/15,340.02 = 3,987.36/x
  3. Step 3: Cross multiply
    10,228.86x = 15,340.02 × 3,987.36
  4. Step 4: Simplify right side
    10,228.86x = 61,166,182.15
  5. Step 5: Solve for x
    x = 61,166,182.15/10,228.86
  6. Step 6: Final answer
    x = 5,979.77

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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.