Home / 21,324.08-31,986.52-7,287.32

Finding the Fourth Proportional to 21,324.08, 31,986.52 and 7,287.32

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Solution

The fourth proportional to 21,324.08, 31,986.52 and 7,287.32 is: 10,931.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.08 : 31,986.52 = 7,287.32 : x
  2. Step 2: Convert to fraction form
    21,324.08/31,986.52 = 7,287.32/x
  3. Step 3: Cross multiply
    21,324.08x = 31,986.52 × 7,287.32
  4. Step 4: Simplify right side
    21,324.08x = 233,096,006.93
  5. Step 5: Solve for x
    x = 233,096,006.93/21,324.08
  6. Step 6: Final answer
    x = 10,931.12

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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.