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Finding the Fourth Proportional to 13,689.84, 20,498.04 and 9,521.04

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Solution

The fourth proportional to 13,689.84, 20,498.04 and 9,521.04 is: 14,256.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.84 : 20,498.04 = 9,521.04 : x
  2. Step 2: Convert to fraction form
    13,689.84/20,498.04 = 9,521.04/x
  3. Step 3: Cross multiply
    13,689.84x = 20,498.04 × 9,521.04
  4. Step 4: Simplify right side
    13,689.84x = 195,162,658.76
  5. Step 5: Solve for x
    x = 195,162,658.76/13,689.84
  6. Step 6: Final answer
    x = 14,256.02

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.