Home / 20,853.08-28,777.73-11,901.42

Finding the Fourth Proportional to 20,853.08, 28,777.73 and 11,901.42

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Solution

The fourth proportional to 20,853.08, 28,777.73 and 11,901.42 is: 16,424.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.08 : 28,777.73 = 11,901.42 : x
  2. Step 2: Convert to fraction form
    20,853.08/28,777.73 = 11,901.42/x
  3. Step 3: Cross multiply
    20,853.08x = 28,777.73 × 11,901.42
  4. Step 4: Simplify right side
    20,853.08x = 342,495,851.38
  5. Step 5: Solve for x
    x = 342,495,851.38/20,853.08
  6. Step 6: Final answer
    x = 16,424.23

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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.