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Finding the Fourth Proportional to 13,603.92, 20,412.12 and 8,068.24

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Solution

The fourth proportional to 13,603.92, 20,412.12 and 8,068.24 is: 12,106.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.92 : 20,412.12 = 8,068.24 : x
  2. Step 2: Convert to fraction form
    13,603.92/20,412.12 = 8,068.24/x
  3. Step 3: Cross multiply
    13,603.92x = 20,412.12 × 8,068.24
  4. Step 4: Simplify right side
    13,603.92x = 164,689,883.07
  5. Step 5: Solve for x
    x = 164,689,883.07/13,603.92
  6. Step 6: Final answer
    x = 12,106.06

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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.