Home / 20,900.71-28,841.83-11,468.53

Finding the Fourth Proportional to 20,900.71, 28,841.83 and 11,468.53

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Solution

The fourth proportional to 20,900.71, 28,841.83 and 11,468.53 is: 15,825.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.71 : 28,841.83 = 11,468.53 : x
  2. Step 2: Convert to fraction form
    20,900.71/28,841.83 = 11,468.53/x
  3. Step 3: Cross multiply
    20,900.71x = 28,841.83 × 11,468.53
  4. Step 4: Simplify right side
    20,900.71x = 330,773,392.61
  5. Step 5: Solve for x
    x = 330,773,392.61/20,900.71
  6. Step 6: Final answer
    x = 15,825.94

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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.