Home / 19,715.28-29,556.59-7,861.74

Finding the Fourth Proportional to 19,715.28, 29,556.59 and 7,861.74

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Solution

The fourth proportional to 19,715.28, 29,556.59 and 7,861.74 is: 11,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.28 : 29,556.59 = 7,861.74 : x
  2. Step 2: Convert to fraction form
    19,715.28/29,556.59 = 7,861.74/x
  3. Step 3: Cross multiply
    19,715.28x = 29,556.59 × 7,861.74
  4. Step 4: Simplify right side
    19,715.28x = 232,366,186.56
  5. Step 5: Solve for x
    x = 232,366,186.56/19,715.28
  6. Step 6: Final answer
    x = 11,786.10

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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.