Home / 18,274.36-25,218.62-9,890.86

Finding the Fourth Proportional to 18,274.36, 25,218.62 and 9,890.86

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Solution

The fourth proportional to 18,274.36, 25,218.62 and 9,890.86 is: 13,649.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.36 : 25,218.62 = 9,890.86 : x
  2. Step 2: Convert to fraction form
    18,274.36/25,218.62 = 9,890.86/x
  3. Step 3: Cross multiply
    18,274.36x = 25,218.62 × 9,890.86
  4. Step 4: Simplify right side
    18,274.36x = 249,433,783.87
  5. Step 5: Solve for x
    x = 249,433,783.87/18,274.36
  6. Step 6: Final answer
    x = 13,649.39

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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.