Home / 11,310.57-15,623.55-9,428.31

Finding the Fourth Proportional to 11,310.57, 15,623.55 and 9,428.31

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Solution

The fourth proportional to 11,310.57, 15,623.55 and 9,428.31 is: 13,023.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.57 : 15,623.55 = 9,428.31 : x
  2. Step 2: Convert to fraction form
    11,310.57/15,623.55 = 9,428.31/x
  3. Step 3: Cross multiply
    11,310.57x = 15,623.55 × 9,428.31
  4. Step 4: Simplify right side
    11,310.57x = 147,303,672.70
  5. Step 5: Solve for x
    x = 147,303,672.70/11,310.57
  6. Step 6: Final answer
    x = 13,023.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.