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Finding the Fourth Proportional to 18,463.90, 27,689.93 and 5,980.91

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Solution

The fourth proportional to 18,463.90, 27,689.93 and 5,980.91 is: 8,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,463.90 : 27,689.93 = 5,980.91 : x
  2. Step 2: Convert to fraction form
    18,463.90/27,689.93 = 5,980.91/x
  3. Step 3: Cross multiply
    18,463.90x = 27,689.93 × 5,980.91
  4. Step 4: Simplify right side
    18,463.90x = 165,611,050.12
  5. Step 5: Solve for x
    x = 165,611,050.12/18,463.90
  6. Step 6: Final answer
    x = 8,969.45

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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.