Home / 13,937.64-20,904.84-5,172.72

Finding the Fourth Proportional to 13,937.64, 20,904.84 and 5,172.72

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Solution

The fourth proportional to 13,937.64, 20,904.84 and 5,172.72 is: 7,758.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.64 : 20,904.84 = 5,172.72 : x
  2. Step 2: Convert to fraction form
    13,937.64/20,904.84 = 5,172.72/x
  3. Step 3: Cross multiply
    13,937.64x = 20,904.84 × 5,172.72
  4. Step 4: Simplify right side
    13,937.64x = 108,134,883.96
  5. Step 5: Solve for x
    x = 108,134,883.96/13,937.64
  6. Step 6: Final answer
    x = 7,758.48

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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.