Home / 15,399.99-21,247.16-9,425.43

Finding the Fourth Proportional to 15,399.99, 21,247.16 and 9,425.43

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Solution

The fourth proportional to 15,399.99, 21,247.16 and 9,425.43 is: 13,004.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.99 : 21,247.16 = 9,425.43 : x
  2. Step 2: Convert to fraction form
    15,399.99/21,247.16 = 9,425.43/x
  3. Step 3: Cross multiply
    15,399.99x = 21,247.16 × 9,425.43
  4. Step 4: Simplify right side
    15,399.99x = 200,263,572.15
  5. Step 5: Solve for x
    x = 200,263,572.15/15,399.99
  6. Step 6: Final answer
    x = 13,004.14

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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.