Home / 18,357.12-25,309.26-15,834.32

Finding the Fourth Proportional to 18,357.12, 25,309.26 and 15,834.32

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Solution

The fourth proportional to 18,357.12, 25,309.26 and 15,834.32 is: 21,831.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.12 : 25,309.26 = 15,834.32 : x
  2. Step 2: Convert to fraction form
    18,357.12/25,309.26 = 15,834.32/x
  3. Step 3: Cross multiply
    18,357.12x = 25,309.26 × 15,834.32
  4. Step 4: Simplify right side
    18,357.12x = 400,754,921.80
  5. Step 5: Solve for x
    x = 400,754,921.80/18,357.12
  6. Step 6: Final answer
    x = 21,831.03

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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.