Home / 9,900.05-13,662.40-5,423.81

Finding the Fourth Proportional to 9,900.05, 13,662.40 and 5,423.81

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Solution

The fourth proportional to 9,900.05, 13,662.40 and 5,423.81 is: 7,485.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.05 : 13,662.40 = 5,423.81 : x
  2. Step 2: Convert to fraction form
    9,900.05/13,662.40 = 5,423.81/x
  3. Step 3: Cross multiply
    9,900.05x = 13,662.40 × 5,423.81
  4. Step 4: Simplify right side
    9,900.05x = 74,102,251.64
  5. Step 5: Solve for x
    x = 74,102,251.64/9,900.05
  6. Step 6: Final answer
    x = 7,485.04

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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.