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Finding the Fourth Proportional to 18,402.12, 27,603 and 5,254.44

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Solution

The fourth proportional to 18,402.12, 27,603 and 5,254.44 is: 7,881.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.12 : 27,603 = 5,254.44 : x
  2. Step 2: Convert to fraction form
    18,402.12/27,603 = 5,254.44/x
  3. Step 3: Cross multiply
    18,402.12x = 27,603 × 5,254.44
  4. Step 4: Simplify right side
    18,402.12x = 145,038,307.32
  5. Step 5: Solve for x
    x = 145,038,307.32/18,402.12
  6. Step 6: Final answer
    x = 7,881.61

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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.