Home / 19,431.64-29,140.06-6,949.36

Finding the Fourth Proportional to 19,431.64, 29,140.06 and 6,949.36

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Solution

The fourth proportional to 19,431.64, 29,140.06 and 6,949.36 is: 10,421.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.64 : 29,140.06 = 6,949.36 : x
  2. Step 2: Convert to fraction form
    19,431.64/29,140.06 = 6,949.36/x
  3. Step 3: Cross multiply
    19,431.64x = 29,140.06 × 6,949.36
  4. Step 4: Simplify right side
    19,431.64x = 202,504,767.36
  5. Step 5: Solve for x
    x = 202,504,767.36/19,431.64
  6. Step 6: Final answer
    x = 10,421.39

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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.