Home / 10,399.68-14,351.20-5,684.16

Finding the Fourth Proportional to 10,399.68, 14,351.20 and 5,684.16

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Solution

The fourth proportional to 10,399.68, 14,351.20 and 5,684.16 is: 7,843.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.68 : 14,351.20 = 5,684.16 : x
  2. Step 2: Convert to fraction form
    10,399.68/14,351.20 = 5,684.16/x
  3. Step 3: Cross multiply
    10,399.68x = 14,351.20 × 5,684.16
  4. Step 4: Simplify right side
    10,399.68x = 81,574,516.99
  5. Step 5: Solve for x
    x = 81,574,516.99/10,399.68
  6. Step 6: Final answer
    x = 7,843.94

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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.