Home / 11,539.19-15,905.43-9,016.92

Finding the Fourth Proportional to 11,539.19, 15,905.43 and 9,016.92

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Solution

The fourth proportional to 11,539.19, 15,905.43 and 9,016.92 is: 12,428.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,539.19 : 15,905.43 = 9,016.92 : x
  2. Step 2: Convert to fraction form
    11,539.19/15,905.43 = 9,016.92/x
  3. Step 3: Cross multiply
    11,539.19x = 15,905.43 × 9,016.92
  4. Step 4: Simplify right side
    11,539.19x = 143,417,989.88
  5. Step 5: Solve for x
    x = 143,417,989.88/11,539.19
  6. Step 6: Final answer
    x = 12,428.77

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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.