Home / 13,579.29-18,740.19-7,612.90

Finding the Fourth Proportional to 13,579.29, 18,740.19 and 7,612.90

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Solution

The fourth proportional to 13,579.29, 18,740.19 and 7,612.90 is: 10,506.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.29 : 18,740.19 = 7,612.90 : x
  2. Step 2: Convert to fraction form
    13,579.29/18,740.19 = 7,612.90/x
  3. Step 3: Cross multiply
    13,579.29x = 18,740.19 × 7,612.90
  4. Step 4: Simplify right side
    13,579.29x = 142,667,192.45
  5. Step 5: Solve for x
    x = 142,667,192.45/13,579.29
  6. Step 6: Final answer
    x = 10,506.23

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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.