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Finding the Fourth Proportional to 22,068.48, 30,455.04 and 12,640.08

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Solution

The fourth proportional to 22,068.48, 30,455.04 and 12,640.08 is: 17,443.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,068.48 : 30,455.04 = 12,640.08 : x
  2. Step 2: Convert to fraction form
    22,068.48/30,455.04 = 12,640.08/x
  3. Step 3: Cross multiply
    22,068.48x = 30,455.04 × 12,640.08
  4. Step 4: Simplify right side
    22,068.48x = 384,954,142.00
  5. Step 5: Solve for x
    x = 384,954,142.00/22,068.48
  6. Step 6: Final answer
    x = 17,443.62

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1.5x scale

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.