Home / 15,421.44-21,281.74-8,348

Finding the Fourth Proportional to 15,421.44, 21,281.74 and 8,348

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Solution

The fourth proportional to 15,421.44, 21,281.74 and 8,348 is: 11,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.44 : 21,281.74 = 8,348 : x
  2. Step 2: Convert to fraction form
    15,421.44/21,281.74 = 8,348/x
  3. Step 3: Cross multiply
    15,421.44x = 21,281.74 × 8,348
  4. Step 4: Simplify right side
    15,421.44x = 177,659,965.52
  5. Step 5: Solve for x
    x = 177,659,965.52/15,421.44
  6. Step 6: Final answer
    x = 11,520.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.