Home / 11,528.28-15,911.10-9,039.96

Finding the Fourth Proportional to 11,528.28, 15,911.10 and 9,039.96

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Solution

The fourth proportional to 11,528.28, 15,911.10 and 9,039.96 is: 12,476.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,528.28 : 15,911.10 = 9,039.96 : x
  2. Step 2: Convert to fraction form
    11,528.28/15,911.10 = 9,039.96/x
  3. Step 3: Cross multiply
    11,528.28x = 15,911.10 × 9,039.96
  4. Step 4: Simplify right side
    11,528.28x = 143,835,707.56
  5. Step 5: Solve for x
    x = 143,835,707.56/11,528.28
  6. Step 6: Final answer
    x = 12,476.77

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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.