Home / 19,781.42-29,664.77-6,630.66

Finding the Fourth Proportional to 19,781.42, 29,664.77 and 6,630.66

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Solution

The fourth proportional to 19,781.42, 29,664.77 and 6,630.66 is: 9,943.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.42 : 29,664.77 = 6,630.66 : x
  2. Step 2: Convert to fraction form
    19,781.42/29,664.77 = 6,630.66/x
  3. Step 3: Cross multiply
    19,781.42x = 29,664.77 × 6,630.66
  4. Step 4: Simplify right side
    19,781.42x = 196,696,970.69
  5. Step 5: Solve for x
    x = 196,696,970.69/19,781.42
  6. Step 6: Final answer
    x = 9,943.52

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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.