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Finding the Fourth Proportional to 16,668.50, 25,008.93 and 7,788.85

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Solution

The fourth proportional to 16,668.50, 25,008.93 and 7,788.85 is: 11,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,668.50 : 25,008.93 = 7,788.85 : x
  2. Step 2: Convert to fraction form
    16,668.50/25,008.93 = 7,788.85/x
  3. Step 3: Cross multiply
    16,668.50x = 25,008.93 × 7,788.85
  4. Step 4: Simplify right side
    16,668.50x = 194,790,741.91
  5. Step 5: Solve for x
    x = 194,790,741.91/16,668.50
  6. Step 6: Final answer
    x = 11,686.16

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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.