Home / 18,217.85-25,140.15-10,259.60

Finding the Fourth Proportional to 18,217.85, 25,140.15 and 10,259.60

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Solution

The fourth proportional to 18,217.85, 25,140.15 and 10,259.60 is: 14,157.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.85 : 25,140.15 = 10,259.60 : x
  2. Step 2: Convert to fraction form
    18,217.85/25,140.15 = 10,259.60/x
  3. Step 3: Cross multiply
    18,217.85x = 25,140.15 × 10,259.60
  4. Step 4: Simplify right side
    18,217.85x = 257,927,757.24
  5. Step 5: Solve for x
    x = 257,927,757.24/18,217.85
  6. Step 6: Final answer
    x = 14,157.97

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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.