Home / 20,384.64-28,104.76-13,201.86

Finding the Fourth Proportional to 20,384.64, 28,104.76 and 13,201.86

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Solution

The fourth proportional to 20,384.64, 28,104.76 and 13,201.86 is: 18,201.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,384.64 : 28,104.76 = 13,201.86 : x
  2. Step 2: Convert to fraction form
    20,384.64/28,104.76 = 13,201.86/x
  3. Step 3: Cross multiply
    20,384.64x = 28,104.76 × 13,201.86
  4. Step 4: Simplify right side
    20,384.64x = 371,035,154.49
  5. Step 5: Solve for x
    x = 371,035,154.49/20,384.64
  6. Step 6: Final answer
    x = 18,201.70

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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.