Home / 21,203.04-31,804.48-5,620.80

Finding the Fourth Proportional to 21,203.04, 31,804.48 and 5,620.80

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Solution

The fourth proportional to 21,203.04, 31,804.48 and 5,620.80 is: 8,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.04 : 31,804.48 = 5,620.80 : x
  2. Step 2: Convert to fraction form
    21,203.04/31,804.48 = 5,620.80/x
  3. Step 3: Cross multiply
    21,203.04x = 31,804.48 × 5,620.80
  4. Step 4: Simplify right side
    21,203.04x = 178,766,621.18
  5. Step 5: Solve for x
    x = 178,766,621.18/21,203.04
  6. Step 6: Final answer
    x = 8,431.18

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1.5x scale

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.