Home / 21,277.32-31,919.24-7,423.08

Finding the Fourth Proportional to 21,277.32, 31,919.24 and 7,423.08

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Solution

The fourth proportional to 21,277.32, 31,919.24 and 7,423.08 is: 11,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.32 : 31,919.24 = 7,423.08 : x
  2. Step 2: Convert to fraction form
    21,277.32/31,919.24 = 7,423.08/x
  3. Step 3: Cross multiply
    21,277.32x = 31,919.24 × 7,423.08
  4. Step 4: Simplify right side
    21,277.32x = 236,939,072.06
  5. Step 5: Solve for x
    x = 236,939,072.06/21,277.32
  6. Step 6: Final answer
    x = 11,135.76

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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.