Home / 14,220.80-21,329.92-4,986.24

Finding the Fourth Proportional to 14,220.80, 21,329.92 and 4,986.24

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Solution

The fourth proportional to 14,220.80, 21,329.92 and 4,986.24 is: 7,478.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.80 : 21,329.92 = 4,986.24 : x
  2. Step 2: Convert to fraction form
    14,220.80/21,329.92 = 4,986.24/x
  3. Step 3: Cross multiply
    14,220.80x = 21,329.92 × 4,986.24
  4. Step 4: Simplify right side
    14,220.80x = 106,356,100.30
  5. Step 5: Solve for x
    x = 106,356,100.30/14,220.80
  6. Step 6: Final answer
    x = 7,478.91

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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.