Home / 18,391.36-25,380.64-10,433.28

Finding the Fourth Proportional to 18,391.36, 25,380.64 and 10,433.28

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Solution

The fourth proportional to 18,391.36, 25,380.64 and 10,433.28 is: 14,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.36 : 25,380.64 = 10,433.28 : x
  2. Step 2: Convert to fraction form
    18,391.36/25,380.64 = 10,433.28/x
  3. Step 3: Cross multiply
    18,391.36x = 25,380.64 × 10,433.28
  4. Step 4: Simplify right side
    18,391.36x = 264,803,323.70
  5. Step 5: Solve for x
    x = 264,803,323.70/18,391.36
  6. Step 6: Final answer
    x = 14,398.25

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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.