Home / 21,021.72-31,535.64-6,228.72

Finding the Fourth Proportional to 21,021.72, 31,535.64 and 6,228.72

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Solution

The fourth proportional to 21,021.72, 31,535.64 and 6,228.72 is: 9,343.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.72 : 31,535.64 = 6,228.72 : x
  2. Step 2: Convert to fraction form
    21,021.72/31,535.64 = 6,228.72/x
  3. Step 3: Cross multiply
    21,021.72x = 31,535.64 × 6,228.72
  4. Step 4: Simplify right side
    21,021.72x = 196,426,671.58
  5. Step 5: Solve for x
    x = 196,426,671.58/21,021.72
  6. Step 6: Final answer
    x = 9,343.99

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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.