Home / 20,897.53-28,840.39-11,467.91

Finding the Fourth Proportional to 20,897.53, 28,840.39 and 11,467.91

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Solution

The fourth proportional to 20,897.53, 28,840.39 and 11,467.91 is: 15,826.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.53 : 28,840.39 = 11,467.91 : x
  2. Step 2: Convert to fraction form
    20,897.53/28,840.39 = 11,467.91/x
  3. Step 3: Cross multiply
    20,897.53x = 28,840.39 × 11,467.91
  4. Step 4: Simplify right side
    20,897.53x = 330,739,040.32
  5. Step 5: Solve for x
    x = 330,739,040.32/20,897.53
  6. Step 6: Final answer
    x = 15,826.71

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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.