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Finding the Fourth Proportional to 27,287.30, 40,930.95 and 18,539.30

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Solution

The fourth proportional to 27,287.30, 40,930.95 and 18,539.30 is: 27,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,287.30 : 40,930.95 = 18,539.30 : x
  2. Step 2: Convert to fraction form
    27,287.30/40,930.95 = 18,539.30/x
  3. Step 3: Cross multiply
    27,287.30x = 40,930.95 × 18,539.30
  4. Step 4: Simplify right side
    27,287.30x = 758,831,161.34
  5. Step 5: Solve for x
    x = 758,831,161.34/27,287.30
  6. Step 6: Final answer
    x = 27,808.95

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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.