Home / 10,515.26-15,775.87-4,279.75

Finding the Fourth Proportional to 10,515.26, 15,775.87 and 4,279.75

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Solution

The fourth proportional to 10,515.26, 15,775.87 and 4,279.75 is: 6,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.26 : 15,775.87 = 4,279.75 : x
  2. Step 2: Convert to fraction form
    10,515.26/15,775.87 = 4,279.75/x
  3. Step 3: Cross multiply
    10,515.26x = 15,775.87 × 4,279.75
  4. Step 4: Simplify right side
    10,515.26x = 67,516,762.34
  5. Step 5: Solve for x
    x = 67,516,762.34/10,515.26
  6. Step 6: Final answer
    x = 6,420.84

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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.