Home / 39,593.96-54,639.18-21,688.76

Finding the Fourth Proportional to 39,593.96, 54,639.18 and 21,688.76

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Solution

The fourth proportional to 39,593.96, 54,639.18 and 21,688.76 is: 29,930.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,593.96 : 54,639.18 = 21,688.76 : x
  2. Step 2: Convert to fraction form
    39,593.96/54,639.18 = 21,688.76/x
  3. Step 3: Cross multiply
    39,593.96x = 54,639.18 × 21,688.76
  4. Step 4: Simplify right side
    39,593.96x = 1,185,056,061.62
  5. Step 5: Solve for x
    x = 1,185,056,061.62/39,593.96
  6. Step 6: Final answer
    x = 29,930.22

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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.