Home / 13,412.95-18,512.73-7,748.62

Finding the Fourth Proportional to 13,412.95, 18,512.73 and 7,748.62

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Solution

The fourth proportional to 13,412.95, 18,512.73 and 7,748.62 is: 10,694.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.95 : 18,512.73 = 7,748.62 : x
  2. Step 2: Convert to fraction form
    13,412.95/18,512.73 = 7,748.62/x
  3. Step 3: Cross multiply
    13,412.95x = 18,512.73 × 7,748.62
  4. Step 4: Simplify right side
    13,412.95x = 143,448,109.93
  5. Step 5: Solve for x
    x = 143,448,109.93/13,412.95
  6. Step 6: Final answer
    x = 10,694.75

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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.