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Finding the Fourth Proportional to 25,858.80, 35,684.19 and 15,804.09

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Solution

The fourth proportional to 25,858.80, 35,684.19 and 15,804.09 is: 21,809.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,858.80 : 35,684.19 = 15,804.09 : x
  2. Step 2: Convert to fraction form
    25,858.80/35,684.19 = 15,804.09/x
  3. Step 3: Cross multiply
    25,858.80x = 35,684.19 × 15,804.09
  4. Step 4: Simplify right side
    25,858.80x = 563,956,150.34
  5. Step 5: Solve for x
    x = 563,956,150.34/25,858.80
  6. Step 6: Final answer
    x = 21,809.06

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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.