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Finding the Fourth Proportional to 15,668.76, 23,490.80 and 7,765.84

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Solution

The fourth proportional to 15,668.76, 23,490.80 and 7,765.84 is: 11,642.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,668.76 : 23,490.80 = 7,765.84 : x
  2. Step 2: Convert to fraction form
    15,668.76/23,490.80 = 7,765.84/x
  3. Step 3: Cross multiply
    15,668.76x = 23,490.80 × 7,765.84
  4. Step 4: Simplify right side
    15,668.76x = 182,425,794.27
  5. Step 5: Solve for x
    x = 182,425,794.27/15,668.76
  6. Step 6: Final answer
    x = 11,642.64

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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.