Home / 21,150.72-31,726.08-7,292.16

Finding the Fourth Proportional to 21,150.72, 31,726.08 and 7,292.16

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Solution

The fourth proportional to 21,150.72, 31,726.08 and 7,292.16 is: 10,938.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.72 : 31,726.08 = 7,292.16 : x
  2. Step 2: Convert to fraction form
    21,150.72/31,726.08 = 7,292.16/x
  3. Step 3: Cross multiply
    21,150.72x = 31,726.08 × 7,292.16
  4. Step 4: Simplify right side
    21,150.72x = 231,351,651.53
  5. Step 5: Solve for x
    x = 231,351,651.53/21,150.72
  6. Step 6: Final answer
    x = 10,938.24

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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.