Home / 39,818.52-54,948.15-21,913.05

Finding the Fourth Proportional to 39,818.52, 54,948.15 and 21,913.05

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Solution

The fourth proportional to 39,818.52, 54,948.15 and 21,913.05 is: 30,239.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,818.52 : 54,948.15 = 21,913.05 : x
  2. Step 2: Convert to fraction form
    39,818.52/54,948.15 = 21,913.05/x
  3. Step 3: Cross multiply
    39,818.52x = 54,948.15 × 21,913.05
  4. Step 4: Simplify right side
    39,818.52x = 1,204,081,558.36
  5. Step 5: Solve for x
    x = 1,204,081,558.36/39,818.52
  6. Step 6: Final answer
    x = 30,239.23

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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.