Home / 25,415.84-38,128.80-7,884.92

Finding the Fourth Proportional to 25,415.84, 38,128.80 and 7,884.92

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Solution

The fourth proportional to 25,415.84, 38,128.80 and 7,884.92 is: 11,828.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,415.84 : 38,128.80 = 7,884.92 : x
  2. Step 2: Convert to fraction form
    25,415.84/38,128.80 = 7,884.92/x
  3. Step 3: Cross multiply
    25,415.84x = 38,128.80 × 7,884.92
  4. Step 4: Simplify right side
    25,415.84x = 300,642,537.70
  5. Step 5: Solve for x
    x = 300,642,537.70/25,415.84
  6. Step 6: Final answer
    x = 11,828.94

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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.