Home / 12,280.34-18,415.10-3,513.26

Finding the Fourth Proportional to 12,280.34, 18,415.10 and 3,513.26

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Solution

The fourth proportional to 12,280.34, 18,415.10 and 3,513.26 is: 5,268.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.34 : 18,415.10 = 3,513.26 : x
  2. Step 2: Convert to fraction form
    12,280.34/18,415.10 = 3,513.26/x
  3. Step 3: Cross multiply
    12,280.34x = 18,415.10 × 3,513.26
  4. Step 4: Simplify right side
    12,280.34x = 64,697,034.23
  5. Step 5: Solve for x
    x = 64,697,034.23/12,280.34
  6. Step 6: Final answer
    x = 5,268.34

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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.