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Finding the Fourth Proportional to 14,572, 20,106.12 and 8,603.92

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Solution

The fourth proportional to 14,572, 20,106.12 and 8,603.92 is: 11,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,572 : 20,106.12 = 8,603.92 : x
  2. Step 2: Convert to fraction form
    14,572/20,106.12 = 8,603.92/x
  3. Step 3: Cross multiply
    14,572x = 20,106.12 × 8,603.92
  4. Step 4: Simplify right side
    14,572x = 172,991,447.99
  5. Step 5: Solve for x
    x = 172,991,447.99/14,572
  6. Step 6: Final answer
    x = 11,871.50

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Why These Related Problems?

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