Home / 39,516.80-54,530.40-21,611.42

Finding the Fourth Proportional to 39,516.80, 54,530.40 and 21,611.42

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Solution

The fourth proportional to 39,516.80, 54,530.40 and 21,611.42 is: 29,822.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,516.80 : 54,530.40 = 21,611.42 : x
  2. Step 2: Convert to fraction form
    39,516.80/54,530.40 = 21,611.42/x
  3. Step 3: Cross multiply
    39,516.80x = 54,530.40 × 21,611.42
  4. Step 4: Simplify right side
    39,516.80x = 1,178,479,377.17
  5. Step 5: Solve for x
    x = 1,178,479,377.17/39,516.80
  6. Step 6: Final answer
    x = 29,822.24

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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.