Home / 20,588.29-28,401.37-13,021.86

Finding the Fourth Proportional to 20,588.29, 28,401.37 and 13,021.86

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Solution

The fourth proportional to 20,588.29, 28,401.37 and 13,021.86 is: 17,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.29 : 28,401.37 = 13,021.86 : x
  2. Step 2: Convert to fraction form
    20,588.29/28,401.37 = 13,021.86/x
  3. Step 3: Cross multiply
    20,588.29x = 28,401.37 × 13,021.86
  4. Step 4: Simplify right side
    20,588.29x = 369,838,663.95
  5. Step 5: Solve for x
    x = 369,838,663.95/20,588.29
  6. Step 6: Final answer
    x = 17,963.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.