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Finding the Fourth Proportional to 26,989.04, 40,490 and 8,521.04

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Solution

The fourth proportional to 26,989.04, 40,490 and 8,521.04 is: 12,783.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,989.04 : 40,490 = 8,521.04 : x
  2. Step 2: Convert to fraction form
    26,989.04/40,490 = 8,521.04/x
  3. Step 3: Cross multiply
    26,989.04x = 40,490 × 8,521.04
  4. Step 4: Simplify right side
    26,989.04x = 345,016,909.60
  5. Step 5: Solve for x
    x = 345,016,909.60/26,989.04
  6. Step 6: Final answer
    x = 12,783.59

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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.