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Finding the Fourth Proportional to 18,354.40, 27,510.03 and 7,821.26

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Solution

The fourth proportional to 18,354.40, 27,510.03 and 7,821.26 is: 11,722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.40 : 27,510.03 = 7,821.26 : x
  2. Step 2: Convert to fraction form
    18,354.40/27,510.03 = 7,821.26/x
  3. Step 3: Cross multiply
    18,354.40x = 27,510.03 × 7,821.26
  4. Step 4: Simplify right side
    18,354.40x = 215,163,062.85
  5. Step 5: Solve for x
    x = 215,163,062.85/18,354.40
  6. Step 6: Final answer
    x = 11,722.70

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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.