Home / 11,441.81-15,781.55-10,500.64

Finding the Fourth Proportional to 11,441.81, 15,781.55 and 10,500.64

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Solution

The fourth proportional to 11,441.81, 15,781.55 and 10,500.64 is: 14,483.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,441.81 : 15,781.55 = 10,500.64 : x
  2. Step 2: Convert to fraction form
    11,441.81/15,781.55 = 10,500.64/x
  3. Step 3: Cross multiply
    11,441.81x = 15,781.55 × 10,500.64
  4. Step 4: Simplify right side
    11,441.81x = 165,716,375.19
  5. Step 5: Solve for x
    x = 165,716,375.19/11,441.81
  6. Step 6: Final answer
    x = 14,483.41

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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.