Home / 13,901.12-20,838.72-5,133.68

Finding the Fourth Proportional to 13,901.12, 20,838.72 and 5,133.68

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Solution

The fourth proportional to 13,901.12, 20,838.72 and 5,133.68 is: 7,695.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.12 : 20,838.72 = 5,133.68 : x
  2. Step 2: Convert to fraction form
    13,901.12/20,838.72 = 5,133.68/x
  3. Step 3: Cross multiply
    13,901.12x = 20,838.72 × 5,133.68
  4. Step 4: Simplify right side
    13,901.12x = 106,979,320.09
  5. Step 5: Solve for x
    x = 106,979,320.09/13,901.12
  6. Step 6: Final answer
    x = 7,695.73

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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.