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Finding the Fourth Proportional to 18,085.76, 27,127.10 and 5,605.50

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Solution

The fourth proportional to 18,085.76, 27,127.10 and 5,605.50 is: 8,407.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.76 : 27,127.10 = 5,605.50 : x
  2. Step 2: Convert to fraction form
    18,085.76/27,127.10 = 5,605.50/x
  3. Step 3: Cross multiply
    18,085.76x = 27,127.10 × 5,605.50
  4. Step 4: Simplify right side
    18,085.76x = 152,060,959.05
  5. Step 5: Solve for x
    x = 152,060,959.05/18,085.76
  6. Step 6: Final answer
    x = 8,407.77

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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.