Home / 21,151.57-31,726.53-8,668.59

Finding the Fourth Proportional to 21,151.57, 31,726.53 and 8,668.59

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Solution

The fourth proportional to 21,151.57, 31,726.53 and 8,668.59 is: 13,002.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.57 : 31,726.53 = 8,668.59 : x
  2. Step 2: Convert to fraction form
    21,151.57/31,726.53 = 8,668.59/x
  3. Step 3: Cross multiply
    21,151.57x = 31,726.53 × 8,668.59
  4. Step 4: Simplify right side
    21,151.57x = 275,024,237.35
  5. Step 5: Solve for x
    x = 275,024,237.35/21,151.57
  6. Step 6: Final answer
    x = 13,002.54

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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.