Home / 39,068.85-53,915.15-21,163.80

Finding the Fourth Proportional to 39,068.85, 53,915.15 and 21,163.80

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Solution

The fourth proportional to 39,068.85, 53,915.15 and 21,163.80 is: 29,206.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,068.85 : 53,915.15 = 21,163.80 : x
  2. Step 2: Convert to fraction form
    39,068.85/53,915.15 = 21,163.80/x
  3. Step 3: Cross multiply
    39,068.85x = 53,915.15 × 21,163.80
  4. Step 4: Simplify right side
    39,068.85x = 1,141,049,345.75
  5. Step 5: Solve for x
    x = 1,141,049,345.75/39,068.85
  6. Step 6: Final answer
    x = 29,206.12

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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.