Home / 39,163.50-54,045.36-21,258.99

Finding the Fourth Proportional to 39,163.50, 54,045.36 and 21,258.99

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Solution

The fourth proportional to 39,163.50, 54,045.36 and 21,258.99 is: 29,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,163.50 : 54,045.36 = 21,258.99 : x
  2. Step 2: Convert to fraction form
    39,163.50/54,045.36 = 21,258.99/x
  3. Step 3: Cross multiply
    39,163.50x = 54,045.36 × 21,258.99
  4. Step 4: Simplify right side
    39,163.50x = 1,148,949,767.79
  5. Step 5: Solve for x
    x = 1,148,949,767.79/39,163.50
  6. Step 6: Final answer
    x = 29,337.26

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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.