Home / 15,736.71-21,715.34-9,020.80

Finding the Fourth Proportional to 15,736.71, 21,715.34 and 9,020.80

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Solution

The fourth proportional to 15,736.71, 21,715.34 and 9,020.80 is: 12,447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,736.71 : 21,715.34 = 9,020.80 : x
  2. Step 2: Convert to fraction form
    15,736.71/21,715.34 = 9,020.80/x
  3. Step 3: Cross multiply
    15,736.71x = 21,715.34 × 9,020.80
  4. Step 4: Simplify right side
    15,736.71x = 195,889,771.85
  5. Step 5: Solve for x
    x = 195,889,771.85/15,736.71
  6. Step 6: Final answer
    x = 12,447.95

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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.