Home / 28,453.04-39,267.44-15,879.68

Finding the Fourth Proportional to 28,453.04, 39,267.44 and 15,879.68

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Solution

The fourth proportional to 28,453.04, 39,267.44 and 15,879.68 is: 21,915.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.04 : 39,267.44 = 15,879.68 : x
  2. Step 2: Convert to fraction form
    28,453.04/39,267.44 = 15,879.68/x
  3. Step 3: Cross multiply
    28,453.04x = 39,267.44 × 15,879.68
  4. Step 4: Simplify right side
    28,453.04x = 623,554,381.62
  5. Step 5: Solve for x
    x = 623,554,381.62/28,453.04
  6. Step 6: Final answer
    x = 21,915.21

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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.