Home / 15,467.76-21,345.53-8,394.21

Finding the Fourth Proportional to 15,467.76, 21,345.53 and 8,394.21

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Solution

The fourth proportional to 15,467.76, 21,345.53 and 8,394.21 is: 11,584.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,467.76 : 21,345.53 = 8,394.21 : x
  2. Step 2: Convert to fraction form
    15,467.76/21,345.53 = 8,394.21/x
  3. Step 3: Cross multiply
    15,467.76x = 21,345.53 × 8,394.21
  4. Step 4: Simplify right side
    15,467.76x = 179,178,819.41
  5. Step 5: Solve for x
    x = 179,178,819.41/15,467.76
  6. Step 6: Final answer
    x = 11,584.02

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1.5x scale

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.