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Finding the Fourth Proportional to 18,227.74, 25,063.40 and 15,570.40

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Solution

The fourth proportional to 18,227.74, 25,063.40 and 15,570.40 is: 21,409.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,227.74 : 25,063.40 = 15,570.40 : x
  2. Step 2: Convert to fraction form
    18,227.74/25,063.40 = 15,570.40/x
  3. Step 3: Cross multiply
    18,227.74x = 25,063.40 × 15,570.40
  4. Step 4: Simplify right side
    18,227.74x = 390,247,163.36
  5. Step 5: Solve for x
    x = 390,247,163.36/18,227.74
  6. Step 6: Final answer
    x = 21,409.52

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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.