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Finding the Fourth Proportional to 11,158.55, 16,741.07 and 5,320.07

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Solution

The fourth proportional to 11,158.55, 16,741.07 and 5,320.07 is: 7,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.55 : 16,741.07 = 5,320.07 : x
  2. Step 2: Convert to fraction form
    11,158.55/16,741.07 = 5,320.07/x
  3. Step 3: Cross multiply
    11,158.55x = 16,741.07 × 5,320.07
  4. Step 4: Simplify right side
    11,158.55x = 89,063,719.43
  5. Step 5: Solve for x
    x = 89,063,719.43/11,158.55
  6. Step 6: Final answer
    x = 7,981.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.