Home / 28,698.30-39,592.80-21,162.60

Finding the Fourth Proportional to 28,698.30, 39,592.80 and 21,162.60

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Solution

The fourth proportional to 28,698.30, 39,592.80 and 21,162.60 is: 29,196.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,698.30 : 39,592.80 = 21,162.60 : x
  2. Step 2: Convert to fraction form
    28,698.30/39,592.80 = 21,162.60/x
  3. Step 3: Cross multiply
    28,698.30x = 39,592.80 × 21,162.60
  4. Step 4: Simplify right side
    28,698.30x = 837,886,589.28
  5. Step 5: Solve for x
    x = 837,886,589.28/28,698.30
  6. Step 6: Final answer
    x = 29,196.38

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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.