Home / 15,216.26-20,991.76-8,925.80

Finding the Fourth Proportional to 15,216.26, 20,991.76 and 8,925.80

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Solution

The fourth proportional to 15,216.26, 20,991.76 and 8,925.80 is: 12,313.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.26 : 20,991.76 = 8,925.80 : x
  2. Step 2: Convert to fraction form
    15,216.26/20,991.76 = 8,925.80/x
  3. Step 3: Cross multiply
    15,216.26x = 20,991.76 × 8,925.80
  4. Step 4: Simplify right side
    15,216.26x = 187,368,124.13
  5. Step 5: Solve for x
    x = 187,368,124.13/15,216.26
  6. Step 6: Final answer
    x = 12,313.68

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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.