Home / 21,060.26-31,590.43-5,477.86

Finding the Fourth Proportional to 21,060.26, 31,590.43 and 5,477.86

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Solution

The fourth proportional to 21,060.26, 31,590.43 and 5,477.86 is: 8,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.26 : 31,590.43 = 5,477.86 : x
  2. Step 2: Convert to fraction form
    21,060.26/31,590.43 = 5,477.86/x
  3. Step 3: Cross multiply
    21,060.26x = 31,590.43 × 5,477.86
  4. Step 4: Simplify right side
    21,060.26x = 173,047,952.88
  5. Step 5: Solve for x
    x = 173,047,952.88/21,060.26
  6. Step 6: Final answer
    x = 8,216.80

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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.