Home / 20,423.88-28,134.67-17,389.24

Finding the Fourth Proportional to 20,423.88, 28,134.67 and 17,389.24

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Solution

The fourth proportional to 20,423.88, 28,134.67 and 17,389.24 is: 23,954.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.88 : 28,134.67 = 17,389.24 : x
  2. Step 2: Convert to fraction form
    20,423.88/28,134.67 = 17,389.24/x
  3. Step 3: Cross multiply
    20,423.88x = 28,134.67 × 17,389.24
  4. Step 4: Simplify right side
    20,423.88x = 489,240,528.95
  5. Step 5: Solve for x
    x = 489,240,528.95/20,423.88
  6. Step 6: Final answer
    x = 23,954.34

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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.