Home / 11,259.31-15,539.99-7,424.20

Finding the Fourth Proportional to 11,259.31, 15,539.99 and 7,424.20

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Solution

The fourth proportional to 11,259.31, 15,539.99 and 7,424.20 is: 10,246.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,259.31 : 15,539.99 = 7,424.20 : x
  2. Step 2: Convert to fraction form
    11,259.31/15,539.99 = 7,424.20/x
  3. Step 3: Cross multiply
    11,259.31x = 15,539.99 × 7,424.20
  4. Step 4: Simplify right side
    11,259.31x = 115,371,993.76
  5. Step 5: Solve for x
    x = 115,371,993.76/11,259.31
  6. Step 6: Final answer
    x = 10,246.81

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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.