Home / 13,897.05-20,853.27-5,137.71

Finding the Fourth Proportional to 13,897.05, 20,853.27 and 5,137.71

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Solution

The fourth proportional to 13,897.05, 20,853.27 and 5,137.71 is: 7,709.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.05 : 20,853.27 = 5,137.71 : x
  2. Step 2: Convert to fraction form
    13,897.05/20,853.27 = 5,137.71/x
  3. Step 3: Cross multiply
    13,897.05x = 20,853.27 × 5,137.71
  4. Step 4: Simplify right side
    13,897.05x = 107,138,053.81
  5. Step 5: Solve for x
    x = 107,138,053.81/13,897.05
  6. Step 6: Final answer
    x = 7,709.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.