Home / 28,971.78-39,983.25-16,224.30

Finding the Fourth Proportional to 28,971.78, 39,983.25 and 16,224.30

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Solution

The fourth proportional to 28,971.78, 39,983.25 and 16,224.30 is: 22,390.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.78 : 39,983.25 = 16,224.30 : x
  2. Step 2: Convert to fraction form
    28,971.78/39,983.25 = 16,224.30/x
  3. Step 3: Cross multiply
    28,971.78x = 39,983.25 × 16,224.30
  4. Step 4: Simplify right side
    28,971.78x = 648,700,242.98
  5. Step 5: Solve for x
    x = 648,700,242.98/28,971.78
  6. Step 6: Final answer
    x = 22,390.76

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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.