Home / 20,359.68-28,100.16-16,379.52

Finding the Fourth Proportional to 20,359.68, 28,100.16 and 16,379.52

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Solution

The fourth proportional to 20,359.68, 28,100.16 and 16,379.52 is: 22,606.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.68 : 28,100.16 = 16,379.52 : x
  2. Step 2: Convert to fraction form
    20,359.68/28,100.16 = 16,379.52/x
  3. Step 3: Cross multiply
    20,359.68x = 28,100.16 × 16,379.52
  4. Step 4: Simplify right side
    20,359.68x = 460,267,132.72
  5. Step 5: Solve for x
    x = 460,267,132.72/20,359.68
  6. Step 6: Final answer
    x = 22,606.80

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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.