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Finding the Fourth Proportional to 20,492.69, 28,095.59 and 20,119.08

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Solution

The fourth proportional to 20,492.69, 28,095.59 and 20,119.08 is: 27,583.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.69 : 28,095.59 = 20,119.08 : x
  2. Step 2: Convert to fraction form
    20,492.69/28,095.59 = 20,119.08/x
  3. Step 3: Cross multiply
    20,492.69x = 28,095.59 × 20,119.08
  4. Step 4: Simplify right side
    20,492.69x = 565,257,322.26
  5. Step 5: Solve for x
    x = 565,257,322.26/20,492.69
  6. Step 6: Final answer
    x = 27,583.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.