Home / 39,915.80-55,083.12-22,012.52

Finding the Fourth Proportional to 39,915.80, 55,083.12 and 22,012.52

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Solution

The fourth proportional to 39,915.80, 55,083.12 and 22,012.52 is: 30,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915.80 : 55,083.12 = 22,012.52 : x
  2. Step 2: Convert to fraction form
    39,915.80/55,083.12 = 22,012.52/x
  3. Step 3: Cross multiply
    39,915.80x = 55,083.12 × 22,012.52
  4. Step 4: Simplify right side
    39,915.80x = 1,212,518,280.66
  5. Step 5: Solve for x
    x = 1,212,518,280.66/39,915.80
  6. Step 6: Final answer
    x = 30,376.90

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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.