Home / 25,450.08-35,120.40-15,386.88

Finding the Fourth Proportional to 25,450.08, 35,120.40 and 15,386.88

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Solution

The fourth proportional to 25,450.08, 35,120.40 and 15,386.88 is: 21,233.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,450.08 : 35,120.40 = 15,386.88 : x
  2. Step 2: Convert to fraction form
    25,450.08/35,120.40 = 15,386.88/x
  3. Step 3: Cross multiply
    25,450.08x = 35,120.40 × 15,386.88
  4. Step 4: Simplify right side
    25,450.08x = 540,393,380.35
  5. Step 5: Solve for x
    x = 540,393,380.35/25,450.08
  6. Step 6: Final answer
    x = 21,233.46

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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.