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Finding the Fourth Proportional to 16,658.85, 22,987 and 10,698.60

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Solution

The fourth proportional to 16,658.85, 22,987 and 10,698.60 is: 14,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,658.85 : 22,987 = 10,698.60 : x
  2. Step 2: Convert to fraction form
    16,658.85/22,987 = 10,698.60/x
  3. Step 3: Cross multiply
    16,658.85x = 22,987 × 10,698.60
  4. Step 4: Simplify right side
    16,658.85x = 245,928,718.20
  5. Step 5: Solve for x
    x = 245,928,718.20/16,658.85
  6. Step 6: Final answer
    x = 14,762.65

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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.