Home / 13,935.45-20,897.37-5,165.58

Finding the Fourth Proportional to 13,935.45, 20,897.37 and 5,165.58

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Solution

The fourth proportional to 13,935.45, 20,897.37 and 5,165.58 is: 7,746.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.45 : 20,897.37 = 5,165.58 : x
  2. Step 2: Convert to fraction form
    13,935.45/20,897.37 = 5,165.58/x
  3. Step 3: Cross multiply
    13,935.45x = 20,897.37 × 5,165.58
  4. Step 4: Simplify right side
    13,935.45x = 107,947,036.52
  5. Step 5: Solve for x
    x = 107,947,036.52/13,935.45
  6. Step 6: Final answer
    x = 7,746.22

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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.