Home / 10,015.87-13,816.65-8,129.56

Finding the Fourth Proportional to 10,015.87, 13,816.65 and 8,129.56

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Solution

The fourth proportional to 10,015.87, 13,816.65 and 8,129.56 is: 11,214.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.87 : 13,816.65 = 8,129.56 : x
  2. Step 2: Convert to fraction form
    10,015.87/13,816.65 = 8,129.56/x
  3. Step 3: Cross multiply
    10,015.87x = 13,816.65 × 8,129.56
  4. Step 4: Simplify right side
    10,015.87x = 112,323,285.17
  5. Step 5: Solve for x
    x = 112,323,285.17/10,015.87
  6. Step 6: Final answer
    x = 11,214.53

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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.