Home / 28,345.60-39,121.14-16,409.44

Finding the Fourth Proportional to 28,345.60, 39,121.14 and 16,409.44

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Solution

The fourth proportional to 28,345.60, 39,121.14 and 16,409.44 is: 22,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.60 : 39,121.14 = 16,409.44 : x
  2. Step 2: Convert to fraction form
    28,345.60/39,121.14 = 16,409.44/x
  3. Step 3: Cross multiply
    28,345.60x = 39,121.14 × 16,409.44
  4. Step 4: Simplify right side
    28,345.60x = 641,955,999.56
  5. Step 5: Solve for x
    x = 641,955,999.56/28,345.60
  6. Step 6: Final answer
    x = 22,647.47

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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.