Home / 15,004.10-20,711.49-13,429.46

Finding the Fourth Proportional to 15,004.10, 20,711.49 and 13,429.46

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Solution

The fourth proportional to 15,004.10, 20,711.49 and 13,429.46 is: 18,537.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.10 : 20,711.49 = 13,429.46 : x
  2. Step 2: Convert to fraction form
    15,004.10/20,711.49 = 13,429.46/x
  3. Step 3: Cross multiply
    15,004.10x = 20,711.49 × 13,429.46
  4. Step 4: Simplify right side
    15,004.10x = 278,144,126.50
  5. Step 5: Solve for x
    x = 278,144,126.50/15,004.10
  6. Step 6: Final answer
    x = 18,537.87

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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.