Home / 16,911.26-23,344.08-15,139.79

Finding the Fourth Proportional to 16,911.26, 23,344.08 and 15,139.79

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Solution

The fourth proportional to 16,911.26, 23,344.08 and 15,139.79 is: 20,898.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,911.26 : 23,344.08 = 15,139.79 : x
  2. Step 2: Convert to fraction form
    16,911.26/23,344.08 = 15,139.79/x
  3. Step 3: Cross multiply
    16,911.26x = 23,344.08 × 15,139.79
  4. Step 4: Simplify right side
    16,911.26x = 353,424,468.94
  5. Step 5: Solve for x
    x = 353,424,468.94/16,911.26
  6. Step 6: Final answer
    x = 20,898.77

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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.