Home / 13,748.16-18,975.96-8,715.36

Finding the Fourth Proportional to 13,748.16, 18,975.96 and 8,715.36

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Solution

The fourth proportional to 13,748.16, 18,975.96 and 8,715.36 is: 12,029.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.16 : 18,975.96 = 8,715.36 : x
  2. Step 2: Convert to fraction form
    13,748.16/18,975.96 = 8,715.36/x
  3. Step 3: Cross multiply
    13,748.16x = 18,975.96 × 8,715.36
  4. Step 4: Simplify right side
    13,748.16x = 165,382,322.75
  5. Step 5: Solve for x
    x = 165,382,322.75/13,748.16
  6. Step 6: Final answer
    x = 12,029.42

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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.