Home / 20,336.88-28,066.14-11,384.94

Finding the Fourth Proportional to 20,336.88, 28,066.14 and 11,384.94

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Solution

The fourth proportional to 20,336.88, 28,066.14 and 11,384.94 is: 15,711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.88 : 28,066.14 = 11,384.94 : x
  2. Step 2: Convert to fraction form
    20,336.88/28,066.14 = 11,384.94/x
  3. Step 3: Cross multiply
    20,336.88x = 28,066.14 × 11,384.94
  4. Step 4: Simplify right side
    20,336.88x = 319,531,319.93
  5. Step 5: Solve for x
    x = 319,531,319.93/20,336.88
  6. Step 6: Final answer
    x = 15,711.91

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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.