Home / 18,274.35-25,218.60-9,890.85

Finding the Fourth Proportional to 18,274.35, 25,218.60 and 9,890.85

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Solution

The fourth proportional to 18,274.35, 25,218.60 and 9,890.85 is: 13,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.35 : 25,218.60 = 9,890.85 : x
  2. Step 2: Convert to fraction form
    18,274.35/25,218.60 = 9,890.85/x
  3. Step 3: Cross multiply
    18,274.35x = 25,218.60 × 9,890.85
  4. Step 4: Simplify right side
    18,274.35x = 249,433,389.81
  5. Step 5: Solve for x
    x = 249,433,389.81/18,274.35
  6. Step 6: Final answer
    x = 13,649.37

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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.