Home / 10,455.78-15,688.29-4,227.96

Finding the Fourth Proportional to 10,455.78, 15,688.29 and 4,227.96

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Solution

The fourth proportional to 10,455.78, 15,688.29 and 4,227.96 is: 6,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.78 : 15,688.29 = 4,227.96 : x
  2. Step 2: Convert to fraction form
    10,455.78/15,688.29 = 4,227.96/x
  3. Step 3: Cross multiply
    10,455.78x = 15,688.29 × 4,227.96
  4. Step 4: Simplify right side
    10,455.78x = 66,329,425.25
  5. Step 5: Solve for x
    x = 66,329,425.25/10,455.78
  6. Step 6: Final answer
    x = 6,343.80

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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.