Home / 9,420.76-14,121.42-4,223.80

Finding the Fourth Proportional to 9,420.76, 14,121.42 and 4,223.80

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Solution

The fourth proportional to 9,420.76, 14,121.42 and 4,223.80 is: 6,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.76 : 14,121.42 = 4,223.80 : x
  2. Step 2: Convert to fraction form
    9,420.76/14,121.42 = 4,223.80/x
  3. Step 3: Cross multiply
    9,420.76x = 14,121.42 × 4,223.80
  4. Step 4: Simplify right side
    9,420.76x = 59,646,053.80
  5. Step 5: Solve for x
    x = 59,646,053.80/9,420.76
  6. Step 6: Final answer
    x = 6,331.34

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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.