Home / 15,289.20-21,098.52-8,575.20

Finding the Fourth Proportional to 15,289.20, 21,098.52 and 8,575.20

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Solution

The fourth proportional to 15,289.20, 21,098.52 and 8,575.20 is: 11,833.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.20 : 21,098.52 = 8,575.20 : x
  2. Step 2: Convert to fraction form
    15,289.20/21,098.52 = 8,575.20/x
  3. Step 3: Cross multiply
    15,289.20x = 21,098.52 × 8,575.20
  4. Step 4: Simplify right side
    15,289.20x = 180,924,028.70
  5. Step 5: Solve for x
    x = 180,924,028.70/15,289.20
  6. Step 6: Final answer
    x = 11,833.45

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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.