Home / 25,455.80-38,144.72-12,957.10

Finding the Fourth Proportional to 25,455.80, 38,144.72 and 12,957.10

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Solution

The fourth proportional to 25,455.80, 38,144.72 and 12,957.10 is: 19,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,455.80 : 38,144.72 = 12,957.10 : x
  2. Step 2: Convert to fraction form
    25,455.80/38,144.72 = 12,957.10/x
  3. Step 3: Cross multiply
    25,455.80x = 38,144.72 × 12,957.10
  4. Step 4: Simplify right side
    25,455.80x = 494,244,888.54
  5. Step 5: Solve for x
    x = 494,244,888.54/25,455.80
  6. Step 6: Final answer
    x = 19,415.80

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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.