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Finding the Fourth Proportional to 15,868.26, 21,898.56 and 9,154.14

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Solution

The fourth proportional to 15,868.26, 21,898.56 and 9,154.14 is: 12,632.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.26 : 21,898.56 = 9,154.14 : x
  2. Step 2: Convert to fraction form
    15,868.26/21,898.56 = 9,154.14/x
  3. Step 3: Cross multiply
    15,868.26x = 21,898.56 × 9,154.14
  4. Step 4: Simplify right side
    15,868.26x = 200,462,484.04
  5. Step 5: Solve for x
    x = 200,462,484.04/15,868.26
  6. Step 6: Final answer
    x = 12,632.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.