Home / 39,416.92-54,396.50-21,513.07

Finding the Fourth Proportional to 39,416.92, 54,396.50 and 21,513.07

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Solution

The fourth proportional to 39,416.92, 54,396.50 and 21,513.07 is: 29,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,416.92 : 54,396.50 = 21,513.07 : x
  2. Step 2: Convert to fraction form
    39,416.92/54,396.50 = 21,513.07/x
  3. Step 3: Cross multiply
    39,416.92x = 54,396.50 × 21,513.07
  4. Step 4: Simplify right side
    39,416.92x = 1,170,235,712.26
  5. Step 5: Solve for x
    x = 1,170,235,712.26/39,416.92
  6. Step 6: Final answer
    x = 29,688.66

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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.