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Finding the Fourth Proportional to 18,302.55, 27,484.19 and 11,420.79

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Solution

The fourth proportional to 18,302.55, 27,484.19 and 11,420.79 is: 17,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.55 : 27,484.19 = 11,420.79 : x
  2. Step 2: Convert to fraction form
    18,302.55/27,484.19 = 11,420.79/x
  3. Step 3: Cross multiply
    18,302.55x = 27,484.19 × 11,420.79
  4. Step 4: Simplify right side
    18,302.55x = 313,891,162.31
  5. Step 5: Solve for x
    x = 313,891,162.31/18,302.55
  6. Step 6: Final answer
    x = 17,150.13

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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.