Home / 21,218.24-31,816.32-9,521.36

Finding the Fourth Proportional to 21,218.24, 31,816.32 and 9,521.36

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Solution

The fourth proportional to 21,218.24, 31,816.32 and 9,521.36 is: 14,277.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.24 : 31,816.32 = 9,521.36 : x
  2. Step 2: Convert to fraction form
    21,218.24/31,816.32 = 9,521.36/x
  3. Step 3: Cross multiply
    21,218.24x = 31,816.32 × 9,521.36
  4. Step 4: Simplify right side
    21,218.24x = 302,934,636.60
  5. Step 5: Solve for x
    x = 302,934,636.60/21,218.24
  6. Step 6: Final answer
    x = 14,277.09

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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.