Home / 20,386.38-30,588.93-12,082.86

Finding the Fourth Proportional to 20,386.38, 30,588.93 and 12,082.86

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Solution

The fourth proportional to 20,386.38, 30,588.93 and 12,082.86 is: 18,129.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.38 : 30,588.93 = 12,082.86 : x
  2. Step 2: Convert to fraction form
    20,386.38/30,588.93 = 12,082.86/x
  3. Step 3: Cross multiply
    20,386.38x = 30,588.93 × 12,082.86
  4. Step 4: Simplify right side
    20,386.38x = 369,601,758.74
  5. Step 5: Solve for x
    x = 369,601,758.74/20,386.38
  6. Step 6: Final answer
    x = 18,129.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.