Home / 10,514.60-15,771.90-5,319.80

Finding the Fourth Proportional to 10,514.60, 15,771.90 and 5,319.80

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Solution

The fourth proportional to 10,514.60, 15,771.90 and 5,319.80 is: 7,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,514.60 : 15,771.90 = 5,319.80 : x
  2. Step 2: Convert to fraction form
    10,514.60/15,771.90 = 5,319.80/x
  3. Step 3: Cross multiply
    10,514.60x = 15,771.90 × 5,319.80
  4. Step 4: Simplify right side
    10,514.60x = 83,903,353.62
  5. Step 5: Solve for x
    x = 83,903,353.62/10,514.60
  6. Step 6: Final answer
    x = 7,979.70

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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.