Home / 18,713.24-25,815.47-11,155.26

Finding the Fourth Proportional to 18,713.24, 25,815.47 and 11,155.26

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Solution

The fourth proportional to 18,713.24, 25,815.47 and 11,155.26 is: 15,389.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.24 : 25,815.47 = 11,155.26 : x
  2. Step 2: Convert to fraction form
    18,713.24/25,815.47 = 11,155.26/x
  3. Step 3: Cross multiply
    18,713.24x = 25,815.47 × 11,155.26
  4. Step 4: Simplify right side
    18,713.24x = 287,978,224.10
  5. Step 5: Solve for x
    x = 287,978,224.10/18,713.24
  6. Step 6: Final answer
    x = 15,389.01

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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.