Home / 13,348.68-18,420.85-7,380.19

Finding the Fourth Proportional to 13,348.68, 18,420.85 and 7,380.19

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Solution

The fourth proportional to 13,348.68, 18,420.85 and 7,380.19 is: 10,184.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.68 : 18,420.85 = 7,380.19 : x
  2. Step 2: Convert to fraction form
    13,348.68/18,420.85 = 7,380.19/x
  3. Step 3: Cross multiply
    13,348.68x = 18,420.85 × 7,380.19
  4. Step 4: Simplify right side
    13,348.68x = 135,949,354.51
  5. Step 5: Solve for x
    x = 135,949,354.51/13,348.68
  6. Step 6: Final answer
    x = 10,184.48

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Double scale
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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.