Home / 13,429.02-20,143.55-5,107.12

Finding the Fourth Proportional to 13,429.02, 20,143.55 and 5,107.12

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Solution

The fourth proportional to 13,429.02, 20,143.55 and 5,107.12 is: 7,660.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.02 : 20,143.55 = 5,107.12 : x
  2. Step 2: Convert to fraction form
    13,429.02/20,143.55 = 5,107.12/x
  3. Step 3: Cross multiply
    13,429.02x = 20,143.55 × 5,107.12
  4. Step 4: Simplify right side
    13,429.02x = 102,875,527.08
  5. Step 5: Solve for x
    x = 102,875,527.08/13,429.02
  6. Step 6: Final answer
    x = 7,660.69

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Double scale
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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.