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Finding the Fourth Proportional to 15,868.21, 23,816.59 and 8,478.98

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Solution

The fourth proportional to 15,868.21, 23,816.59 and 8,478.98 is: 12,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.21 : 23,816.59 = 8,478.98 : x
  2. Step 2: Convert to fraction form
    15,868.21/23,816.59 = 8,478.98/x
  3. Step 3: Cross multiply
    15,868.21x = 23,816.59 × 8,478.98
  4. Step 4: Simplify right side
    15,868.21x = 201,940,428.62
  5. Step 5: Solve for x
    x = 201,940,428.62/15,868.21
  6. Step 6: Final answer
    x = 12,726.10

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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.