Home / 22,068.21-30,429.40-20,668.53

Finding the Fourth Proportional to 22,068.21, 30,429.40 and 20,668.53

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Solution

The fourth proportional to 22,068.21, 30,429.40 and 20,668.53 is: 28,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,068.21 : 30,429.40 = 20,668.53 : x
  2. Step 2: Convert to fraction form
    22,068.21/30,429.40 = 20,668.53/x
  3. Step 3: Cross multiply
    22,068.21x = 30,429.40 × 20,668.53
  4. Step 4: Simplify right side
    22,068.21x = 628,930,966.78
  5. Step 5: Solve for x
    x = 628,930,966.78/22,068.21
  6. Step 6: Final answer
    x = 28,499.41

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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.