Home / 18,619.53-25,695.06-10,121.72

Finding the Fourth Proportional to 18,619.53, 25,695.06 and 10,121.72

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Solution

The fourth proportional to 18,619.53, 25,695.06 and 10,121.72 is: 13,968.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.53 : 25,695.06 = 10,121.72 : x
  2. Step 2: Convert to fraction form
    18,619.53/25,695.06 = 10,121.72/x
  3. Step 3: Cross multiply
    18,619.53x = 25,695.06 × 10,121.72
  4. Step 4: Simplify right side
    18,619.53x = 260,078,036.27
  5. Step 5: Solve for x
    x = 260,078,036.27/18,619.53
  6. Step 6: Final answer
    x = 13,968.03

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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.