Home / 10,104.45-15,157.08-5,172.76

Finding the Fourth Proportional to 10,104.45, 15,157.08 and 5,172.76

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Solution

The fourth proportional to 10,104.45, 15,157.08 and 5,172.76 is: 7,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,104.45 : 15,157.08 = 5,172.76 : x
  2. Step 2: Convert to fraction form
    10,104.45/15,157.08 = 5,172.76/x
  3. Step 3: Cross multiply
    10,104.45x = 15,157.08 × 5,172.76
  4. Step 4: Simplify right side
    10,104.45x = 78,403,911.28
  5. Step 5: Solve for x
    x = 78,403,911.28/10,104.45
  6. Step 6: Final answer
    x = 7,759.35

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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.