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Finding the Fourth Proportional to 18,140.20, 27,210.30 and 17,967.40

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Solution

The fourth proportional to 18,140.20, 27,210.30 and 17,967.40 is: 26,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.20 : 27,210.30 = 17,967.40 : x
  2. Step 2: Convert to fraction form
    18,140.20/27,210.30 = 17,967.40/x
  3. Step 3: Cross multiply
    18,140.20x = 27,210.30 × 17,967.40
  4. Step 4: Simplify right side
    18,140.20x = 488,898,344.22
  5. Step 5: Solve for x
    x = 488,898,344.22/18,140.20
  6. Step 6: Final answer
    x = 26,951.10

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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.