Home / 21,204.04-31,805.98-5,621.80

Finding the Fourth Proportional to 21,204.04, 31,805.98 and 5,621.80

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Solution

The fourth proportional to 21,204.04, 31,805.98 and 5,621.80 is: 8,432.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.04 : 31,805.98 = 5,621.80 : x
  2. Step 2: Convert to fraction form
    21,204.04/31,805.98 = 5,621.80/x
  3. Step 3: Cross multiply
    21,204.04x = 31,805.98 × 5,621.80
  4. Step 4: Simplify right side
    21,204.04x = 178,806,858.36
  5. Step 5: Solve for x
    x = 178,806,858.36/21,204.04
  6. Step 6: Final answer
    x = 8,432.68

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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.