Home / 10,994.14-15,158.55-7,639.74

Finding the Fourth Proportional to 10,994.14, 15,158.55 and 7,639.74

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Solution

The fourth proportional to 10,994.14, 15,158.55 and 7,639.74 is: 10,533.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,994.14 : 15,158.55 = 7,639.74 : x
  2. Step 2: Convert to fraction form
    10,994.14/15,158.55 = 7,639.74/x
  3. Step 3: Cross multiply
    10,994.14x = 15,158.55 × 7,639.74
  4. Step 4: Simplify right side
    10,994.14x = 115,807,380.78
  5. Step 5: Solve for x
    x = 115,807,380.78/10,994.14
  6. Step 6: Final answer
    x = 10,533.56

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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.