Home / 10,245.31-15,331.39-7,437.40

Finding the Fourth Proportional to 10,245.31, 15,331.39 and 7,437.40

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Solution

The fourth proportional to 10,245.31, 15,331.39 and 7,437.40 is: 11,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,245.31 : 15,331.39 = 7,437.40 : x
  2. Step 2: Convert to fraction form
    10,245.31/15,331.39 = 7,437.40/x
  3. Step 3: Cross multiply
    10,245.31x = 15,331.39 × 7,437.40
  4. Step 4: Simplify right side
    10,245.31x = 114,025,623.06
  5. Step 5: Solve for x
    x = 114,025,623.06/10,245.31
  6. Step 6: Final answer
    x = 11,129.55

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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.