Home / 21,620.48-29,836.44-12,668.24

Finding the Fourth Proportional to 21,620.48, 29,836.44 and 12,668.24

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Solution

The fourth proportional to 21,620.48, 29,836.44 and 12,668.24 is: 17,482.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.48 : 29,836.44 = 12,668.24 : x
  2. Step 2: Convert to fraction form
    21,620.48/29,836.44 = 12,668.24/x
  3. Step 3: Cross multiply
    21,620.48x = 29,836.44 × 12,668.24
  4. Step 4: Simplify right side
    21,620.48x = 377,975,182.67
  5. Step 5: Solve for x
    x = 377,975,182.67/21,620.48
  6. Step 6: Final answer
    x = 17,482.28

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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.