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Finding the Fourth Proportional to 25,619.63, 38,435.93 and 7,151.63

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Solution

The fourth proportional to 25,619.63, 38,435.93 and 7,151.63 is: 10,729.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,619.63 : 38,435.93 = 7,151.63 : x
  2. Step 2: Convert to fraction form
    25,619.63/38,435.93 = 7,151.63/x
  3. Step 3: Cross multiply
    25,619.63x = 38,435.93 × 7,151.63
  4. Step 4: Simplify right side
    25,619.63x = 274,879,322.13
  5. Step 5: Solve for x
    x = 274,879,322.13/25,619.63
  6. Step 6: Final answer
    x = 10,729.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.