Home / 10,315.78-15,462.15-9,485.44

Finding the Fourth Proportional to 10,315.78, 15,462.15 and 9,485.44

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Solution

The fourth proportional to 10,315.78, 15,462.15 and 9,485.44 is: 14,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,315.78 : 15,462.15 = 9,485.44 : x
  2. Step 2: Convert to fraction form
    10,315.78/15,462.15 = 9,485.44/x
  3. Step 3: Cross multiply
    10,315.78x = 15,462.15 × 9,485.44
  4. Step 4: Simplify right side
    10,315.78x = 146,665,296.10
  5. Step 5: Solve for x
    x = 146,665,296.10/10,315.78
  6. Step 6: Final answer
    x = 14,217.57

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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.