Home / 13,079.15-19,618.53-3,218.51

Finding the Fourth Proportional to 13,079.15, 19,618.53 and 3,218.51

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Solution

The fourth proportional to 13,079.15, 19,618.53 and 3,218.51 is: 4,827.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.15 : 19,618.53 = 3,218.51 : x
  2. Step 2: Convert to fraction form
    13,079.15/19,618.53 = 3,218.51/x
  3. Step 3: Cross multiply
    13,079.15x = 19,618.53 × 3,218.51
  4. Step 4: Simplify right side
    13,079.15x = 63,142,336.90
  5. Step 5: Solve for x
    x = 63,142,336.90/13,079.15
  6. Step 6: Final answer
    x = 4,827.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.