Home / 20,542.72-28,342.34-16,222.10

Finding the Fourth Proportional to 20,542.72, 28,342.34 and 16,222.10

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Solution

The fourth proportional to 20,542.72, 28,342.34 and 16,222.10 is: 22,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.72 : 28,342.34 = 16,222.10 : x
  2. Step 2: Convert to fraction form
    20,542.72/28,342.34 = 16,222.10/x
  3. Step 3: Cross multiply
    20,542.72x = 28,342.34 × 16,222.10
  4. Step 4: Simplify right side
    20,542.72x = 459,772,273.71
  5. Step 5: Solve for x
    x = 459,772,273.71/20,542.72
  6. Step 6: Final answer
    x = 22,381.28

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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.