Home / 28,962.25-39,970.38-16,389.43

Finding the Fourth Proportional to 28,962.25, 39,970.38 and 16,389.43

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Solution

The fourth proportional to 28,962.25, 39,970.38 and 16,389.43 is: 22,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,962.25 : 39,970.38 = 16,389.43 : x
  2. Step 2: Convert to fraction form
    28,962.25/39,970.38 = 16,389.43/x
  3. Step 3: Cross multiply
    28,962.25x = 39,970.38 × 16,389.43
  4. Step 4: Simplify right side
    28,962.25x = 655,091,745.08
  5. Step 5: Solve for x
    x = 655,091,745.08/28,962.25
  6. Step 6: Final answer
    x = 22,618.81

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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.