Home / 20,369.52-28,113.24-12,192.60

Finding the Fourth Proportional to 20,369.52, 28,113.24 and 12,192.60

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Solution

The fourth proportional to 20,369.52, 28,113.24 and 12,192.60 is: 16,827.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.52 : 28,113.24 = 12,192.60 : x
  2. Step 2: Convert to fraction form
    20,369.52/28,113.24 = 12,192.60/x
  3. Step 3: Cross multiply
    20,369.52x = 28,113.24 × 12,192.60
  4. Step 4: Simplify right side
    20,369.52x = 342,773,490.02
  5. Step 5: Solve for x
    x = 342,773,490.02/20,369.52
  6. Step 6: Final answer
    x = 16,827.76

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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.