Home / 39,416.29-54,394.63-21,511.69

Finding the Fourth Proportional to 39,416.29, 54,394.63 and 21,511.69

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Solution

The fourth proportional to 39,416.29, 54,394.63 and 21,511.69 is: 29,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,416.29 : 54,394.63 = 21,511.69 : x
  2. Step 2: Convert to fraction form
    39,416.29/54,394.63 = 21,511.69/x
  3. Step 3: Cross multiply
    39,416.29x = 54,394.63 × 21,511.69
  4. Step 4: Simplify right side
    39,416.29x = 1,170,120,228.46
  5. Step 5: Solve for x
    x = 1,170,120,228.46/39,416.29
  6. Step 6: Final answer
    x = 29,686.21

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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.