Home / 28,520.64-39,357.36-15,772.98

Finding the Fourth Proportional to 28,520.64, 39,357.36 and 15,772.98

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Solution

The fourth proportional to 28,520.64, 39,357.36 and 15,772.98 is: 21,766.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.64 : 39,357.36 = 15,772.98 : x
  2. Step 2: Convert to fraction form
    28,520.64/39,357.36 = 15,772.98/x
  3. Step 3: Cross multiply
    28,520.64x = 39,357.36 × 15,772.98
  4. Step 4: Simplify right side
    28,520.64x = 620,782,852.13
  5. Step 5: Solve for x
    x = 620,782,852.13/28,520.64
  6. Step 6: Final answer
    x = 21,766.09

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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.