Home / 18,411.79-27,618.60-5,266.09

Finding the Fourth Proportional to 18,411.79, 27,618.60 and 5,266.09

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Solution

The fourth proportional to 18,411.79, 27,618.60 and 5,266.09 is: 7,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.79 : 27,618.60 = 5,266.09 : x
  2. Step 2: Convert to fraction form
    18,411.79/27,618.60 = 5,266.09/x
  3. Step 3: Cross multiply
    18,411.79x = 27,618.60 × 5,266.09
  4. Step 4: Simplify right side
    18,411.79x = 145,442,033.27
  5. Step 5: Solve for x
    x = 145,442,033.27/18,411.79
  6. Step 6: Final answer
    x = 7,899.40

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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.