Home / 13,325.28-18,405.24-9,983.04

Finding the Fourth Proportional to 13,325.28, 18,405.24 and 9,983.04

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Solution

The fourth proportional to 13,325.28, 18,405.24 and 9,983.04 is: 13,788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.28 : 18,405.24 = 9,983.04 : x
  2. Step 2: Convert to fraction form
    13,325.28/18,405.24 = 9,983.04/x
  3. Step 3: Cross multiply
    13,325.28x = 18,405.24 × 9,983.04
  4. Step 4: Simplify right side
    13,325.28x = 183,740,247.13
  5. Step 5: Solve for x
    x = 183,740,247.13/13,325.28
  6. Step 6: Final answer
    x = 13,788.85

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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.