Home / 28,416.12-39,212.82-15,838.44

Finding the Fourth Proportional to 28,416.12, 39,212.82 and 15,838.44

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Solution

The fourth proportional to 28,416.12, 39,212.82 and 15,838.44 is: 21,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.12 : 39,212.82 = 15,838.44 : x
  2. Step 2: Convert to fraction form
    28,416.12/39,212.82 = 15,838.44/x
  3. Step 3: Cross multiply
    28,416.12x = 39,212.82 × 15,838.44
  4. Step 4: Simplify right side
    28,416.12x = 621,069,896.80
  5. Step 5: Solve for x
    x = 621,069,896.80/28,416.12
  6. Step 6: Final answer
    x = 21,856.25

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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.