Home / 15,289.47-21,099.21-8,575.11

Finding the Fourth Proportional to 15,289.47, 21,099.21 and 8,575.11

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Solution

The fourth proportional to 15,289.47, 21,099.21 and 8,575.11 is: 11,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.47 : 21,099.21 = 8,575.11 : x
  2. Step 2: Convert to fraction form
    15,289.47/21,099.21 = 8,575.11/x
  3. Step 3: Cross multiply
    15,289.47x = 21,099.21 × 8,575.11
  4. Step 4: Simplify right side
    15,289.47x = 180,928,046.66
  5. Step 5: Solve for x
    x = 180,928,046.66/15,289.47
  6. Step 6: Final answer
    x = 11,833.51

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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.