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Finding the Fourth Proportional to 15,782.60, 23,673.90 and 9,945.80

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Solution

The fourth proportional to 15,782.60, 23,673.90 and 9,945.80 is: 14,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,782.60 : 23,673.90 = 9,945.80 : x
  2. Step 2: Convert to fraction form
    15,782.60/23,673.90 = 9,945.80/x
  3. Step 3: Cross multiply
    15,782.60x = 23,673.90 × 9,945.80
  4. Step 4: Simplify right side
    15,782.60x = 235,455,874.62
  5. Step 5: Solve for x
    x = 235,455,874.62/15,782.60
  6. Step 6: Final answer
    x = 14,918.70

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Similar ratio
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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.