Home / 20,336.70-28,064.35-11,384.19

Finding the Fourth Proportional to 20,336.70, 28,064.35 and 11,384.19

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Solution

The fourth proportional to 20,336.70, 28,064.35 and 11,384.19 is: 15,710.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.70 : 28,064.35 = 11,384.19 : x
  2. Step 2: Convert to fraction form
    20,336.70/28,064.35 = 11,384.19/x
  3. Step 3: Cross multiply
    20,336.70x = 28,064.35 × 11,384.19
  4. Step 4: Simplify right side
    20,336.70x = 319,489,906.86
  5. Step 5: Solve for x
    x = 319,489,906.86/20,336.70
  6. Step 6: Final answer
    x = 15,710.01

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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.