Home / 10,245.89-15,369.28-5,312.39

Finding the Fourth Proportional to 10,245.89, 15,369.28 and 5,312.39

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Solution

The fourth proportional to 10,245.89, 15,369.28 and 5,312.39 is: 7,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,245.89 : 15,369.28 = 5,312.39 : x
  2. Step 2: Convert to fraction form
    10,245.89/15,369.28 = 5,312.39/x
  3. Step 3: Cross multiply
    10,245.89x = 15,369.28 × 5,312.39
  4. Step 4: Simplify right side
    10,245.89x = 81,647,519.25
  5. Step 5: Solve for x
    x = 81,647,519.25/10,245.89
  6. Step 6: Final answer
    x = 7,968.80

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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.