Home / 39,594.18-54,640.14-21,688.80

Finding the Fourth Proportional to 39,594.18, 54,640.14 and 21,688.80

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Solution

The fourth proportional to 39,594.18, 54,640.14 and 21,688.80 is: 29,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,594.18 : 54,640.14 = 21,688.80 : x
  2. Step 2: Convert to fraction form
    39,594.18/54,640.14 = 21,688.80/x
  3. Step 3: Cross multiply
    39,594.18x = 54,640.14 × 21,688.80
  4. Step 4: Simplify right side
    39,594.18x = 1,185,079,068.43
  5. Step 5: Solve for x
    x = 1,185,079,068.43/39,594.18
  6. Step 6: Final answer
    x = 29,930.64

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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.