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Finding the Fourth Proportional to 13,864.78, 20,797.32 and 4,630.78

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Solution

The fourth proportional to 13,864.78, 20,797.32 and 4,630.78 is: 6,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.78 : 20,797.32 = 4,630.78 : x
  2. Step 2: Convert to fraction form
    13,864.78/20,797.32 = 4,630.78/x
  3. Step 3: Cross multiply
    13,864.78x = 20,797.32 × 4,630.78
  4. Step 4: Simplify right side
    13,864.78x = 96,307,813.51
  5. Step 5: Solve for x
    x = 96,307,813.51/13,864.78
  6. Step 6: Final answer
    x = 6,946.22

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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.