Home / 39,591.32-54,636.09-21,686.36

Finding the Fourth Proportional to 39,591.32, 54,636.09 and 21,686.36

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Solution

The fourth proportional to 39,591.32, 54,636.09 and 21,686.36 is: 29,927.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,591.32 : 54,636.09 = 21,686.36 : x
  2. Step 2: Convert to fraction form
    39,591.32/54,636.09 = 21,686.36/x
  3. Step 3: Cross multiply
    39,591.32x = 54,636.09 × 21,686.36
  4. Step 4: Simplify right side
    39,591.32x = 1,184,857,916.73
  5. Step 5: Solve for x
    x = 1,184,857,916.73/39,591.32
  6. Step 6: Final answer
    x = 29,927.21

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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.