Home / 15,340.12-21,169.26-8,716.12

Finding the Fourth Proportional to 15,340.12, 21,169.26 and 8,716.12

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Solution

The fourth proportional to 15,340.12, 21,169.26 and 8,716.12 is: 12,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.12 : 21,169.26 = 8,716.12 : x
  2. Step 2: Convert to fraction form
    15,340.12/21,169.26 = 8,716.12/x
  3. Step 3: Cross multiply
    15,340.12x = 21,169.26 × 8,716.12
  4. Step 4: Simplify right side
    15,340.12x = 184,513,810.47
  5. Step 5: Solve for x
    x = 184,513,810.47/15,340.12
  6. Step 6: Final answer
    x = 12,028.19

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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.