Home / 18,619.04-25,694-10,120.88

Finding the Fourth Proportional to 18,619.04, 25,694 and 10,120.88

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Solution

The fourth proportional to 18,619.04, 25,694 and 10,120.88 is: 13,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.04 : 25,694 = 10,120.88 : x
  2. Step 2: Convert to fraction form
    18,619.04/25,694 = 10,120.88/x
  3. Step 3: Cross multiply
    18,619.04x = 25,694 × 10,120.88
  4. Step 4: Simplify right side
    18,619.04x = 260,045,890.72
  5. Step 5: Solve for x
    x = 260,045,890.72/18,619.04
  6. Step 6: Final answer
    x = 13,966.66

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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.