Home / 21,492.23-29,668.47-20,147.18

Finding the Fourth Proportional to 21,492.23, 29,668.47 and 20,147.18

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Solution

The fourth proportional to 21,492.23, 29,668.47 and 20,147.18 is: 27,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,492.23 : 29,668.47 = 20,147.18 : x
  2. Step 2: Convert to fraction form
    21,492.23/29,668.47 = 20,147.18/x
  3. Step 3: Cross multiply
    21,492.23x = 29,668.47 × 20,147.18
  4. Step 4: Simplify right side
    21,492.23x = 597,736,005.41
  5. Step 5: Solve for x
    x = 597,736,005.41/21,492.23
  6. Step 6: Final answer
    x = 27,811.73

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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.