Home / 15,012.09-20,718.59-8,723.25

Finding the Fourth Proportional to 15,012.09, 20,718.59 and 8,723.25

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Solution

The fourth proportional to 15,012.09, 20,718.59 and 8,723.25 is: 12,039.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.09 : 20,718.59 = 8,723.25 : x
  2. Step 2: Convert to fraction form
    15,012.09/20,718.59 = 8,723.25/x
  3. Step 3: Cross multiply
    15,012.09x = 20,718.59 × 8,723.25
  4. Step 4: Simplify right side
    15,012.09x = 180,733,396.60
  5. Step 5: Solve for x
    x = 180,733,396.60/15,012.09
  6. Step 6: Final answer
    x = 12,039.19

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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.