Home / 18,265.47-27,378.51-8,911.80

Finding the Fourth Proportional to 18,265.47, 27,378.51 and 8,911.80

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Solution

The fourth proportional to 18,265.47, 27,378.51 and 8,911.80 is: 13,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,265.47 : 27,378.51 = 8,911.80 : x
  2. Step 2: Convert to fraction form
    18,265.47/27,378.51 = 8,911.80/x
  3. Step 3: Cross multiply
    18,265.47x = 27,378.51 × 8,911.80
  4. Step 4: Simplify right side
    18,265.47x = 243,991,805.42
  5. Step 5: Solve for x
    x = 243,991,805.42/18,265.47
  6. Step 6: Final answer
    x = 13,358.09

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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.