Home / 30,447.32-45,674.64-10,721.80

Finding the Fourth Proportional to 30,447.32, 45,674.64 and 10,721.80

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Solution

The fourth proportional to 30,447.32, 45,674.64 and 10,721.80 is: 16,083.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.32 : 45,674.64 = 10,721.80 : x
  2. Step 2: Convert to fraction form
    30,447.32/45,674.64 = 10,721.80/x
  3. Step 3: Cross multiply
    30,447.32x = 45,674.64 × 10,721.80
  4. Step 4: Simplify right side
    30,447.32x = 489,714,355.15
  5. Step 5: Solve for x
    x = 489,714,355.15/30,447.32
  6. Step 6: Final answer
    x = 16,083.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.