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Finding the Fourth Proportional to 25,812.80, 35,621.69 and 15,065.07

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Solution

The fourth proportional to 25,812.80, 35,621.69 and 15,065.07 is: 20,789.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,812.80 : 35,621.69 = 15,065.07 : x
  2. Step 2: Convert to fraction form
    25,812.80/35,621.69 = 15,065.07/x
  3. Step 3: Cross multiply
    25,812.80x = 35,621.69 × 15,065.07
  4. Step 4: Simplify right side
    25,812.80x = 536,643,253.37
  5. Step 5: Solve for x
    x = 536,643,253.37/25,812.80
  6. Step 6: Final answer
    x = 20,789.81

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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.