Home / 13,574.97-18,725.18-8,975.75

Finding the Fourth Proportional to 13,574.97, 18,725.18 and 8,975.75

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Solution

The fourth proportional to 13,574.97, 18,725.18 and 8,975.75 is: 12,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,574.97 : 18,725.18 = 8,975.75 : x
  2. Step 2: Convert to fraction form
    13,574.97/18,725.18 = 8,975.75/x
  3. Step 3: Cross multiply
    13,574.97x = 18,725.18 × 8,975.75
  4. Step 4: Simplify right side
    13,574.97x = 168,072,395.88
  5. Step 5: Solve for x
    x = 168,072,395.88/13,574.97
  6. Step 6: Final answer
    x = 12,381.05

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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.