Home / 39,630.81-54,691.80-21,727.77

Finding the Fourth Proportional to 39,630.81, 54,691.80 and 21,727.77

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Solution

The fourth proportional to 39,630.81, 54,691.80 and 21,727.77 is: 29,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.81 : 54,691.80 = 21,727.77 : x
  2. Step 2: Convert to fraction form
    39,630.81/54,691.80 = 21,727.77/x
  3. Step 3: Cross multiply
    39,630.81x = 54,691.80 × 21,727.77
  4. Step 4: Simplify right side
    39,630.81x = 1,188,330,851.29
  5. Step 5: Solve for x
    x = 1,188,330,851.29/39,630.81
  6. Step 6: Final answer
    x = 29,985.03

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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.