Home / 28,425.66-39,228.48-15,852.84

Finding the Fourth Proportional to 28,425.66, 39,228.48 and 15,852.84

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Solution

The fourth proportional to 28,425.66, 39,228.48 and 15,852.84 is: 21,877.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.66 : 39,228.48 = 15,852.84 : x
  2. Step 2: Convert to fraction form
    28,425.66/39,228.48 = 15,852.84/x
  3. Step 3: Cross multiply
    28,425.66x = 39,228.48 × 15,852.84
  4. Step 4: Simplify right side
    28,425.66x = 621,882,816.88
  5. Step 5: Solve for x
    x = 621,882,816.88/28,425.66
  6. Step 6: Final answer
    x = 21,877.52

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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.