Home / 28,182.42-38,897.01-20,137.86

Finding the Fourth Proportional to 28,182.42, 38,897.01 and 20,137.86

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Solution

The fourth proportional to 28,182.42, 38,897.01 and 20,137.86 is: 27,794.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.42 : 38,897.01 = 20,137.86 : x
  2. Step 2: Convert to fraction form
    28,182.42/38,897.01 = 20,137.86/x
  3. Step 3: Cross multiply
    28,182.42x = 38,897.01 × 20,137.86
  4. Step 4: Simplify right side
    28,182.42x = 783,302,541.80
  5. Step 5: Solve for x
    x = 783,302,541.80/28,182.42
  6. Step 6: Final answer
    x = 27,794.01

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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.