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Finding the Fourth Proportional to 15,117.90, 22,698.45 and 8,556.90

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Solution

The fourth proportional to 15,117.90, 22,698.45 and 8,556.90 is: 12,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.90 : 22,698.45 = 8,556.90 : x
  2. Step 2: Convert to fraction form
    15,117.90/22,698.45 = 8,556.90/x
  3. Step 3: Cross multiply
    15,117.90x = 22,698.45 × 8,556.90
  4. Step 4: Simplify right side
    15,117.90x = 194,228,366.81
  5. Step 5: Solve for x
    x = 194,228,366.81/15,117.90
  6. Step 6: Final answer
    x = 12,847.58

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1.5x scale

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.