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Finding the Fourth Proportional to 25,491.50, 35,187.74 and 21,892.01

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Solution

The fourth proportional to 25,491.50, 35,187.74 and 21,892.01 is: 30,219.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,491.50 : 35,187.74 = 21,892.01 : x
  2. Step 2: Convert to fraction form
    25,491.50/35,187.74 = 21,892.01/x
  3. Step 3: Cross multiply
    25,491.50x = 35,187.74 × 21,892.01
  4. Step 4: Simplify right side
    25,491.50x = 770,330,275.80
  5. Step 5: Solve for x
    x = 770,330,275.80/25,491.50
  6. Step 6: Final answer
    x = 30,219.10

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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.