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Finding the Fourth Proportional to 18,585.40, 27,878.10 and 6,896.30

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Solution

The fourth proportional to 18,585.40, 27,878.10 and 6,896.30 is: 10,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,585.40 : 27,878.10 = 6,896.30 : x
  2. Step 2: Convert to fraction form
    18,585.40/27,878.10 = 6,896.30/x
  3. Step 3: Cross multiply
    18,585.40x = 27,878.10 × 6,896.30
  4. Step 4: Simplify right side
    18,585.40x = 192,255,741.03
  5. Step 5: Solve for x
    x = 192,255,741.03/18,585.40
  6. Step 6: Final answer
    x = 10,344.45

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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.