Home / 10,280.63-15,420.94-2,489.45

Finding the Fourth Proportional to 10,280.63, 15,420.94 and 2,489.45

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Solution

The fourth proportional to 10,280.63, 15,420.94 and 2,489.45 is: 3,734.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.63 : 15,420.94 = 2,489.45 : x
  2. Step 2: Convert to fraction form
    10,280.63/15,420.94 = 2,489.45/x
  3. Step 3: Cross multiply
    10,280.63x = 15,420.94 × 2,489.45
  4. Step 4: Simplify right side
    10,280.63x = 38,389,575.75
  5. Step 5: Solve for x
    x = 38,389,575.75/10,280.63
  6. Step 6: Final answer
    x = 3,734.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.