Home / 18,685.47-28,021.20-6,203.16

Finding the Fourth Proportional to 18,685.47, 28,021.20 and 6,203.16

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Solution

The fourth proportional to 18,685.47, 28,021.20 and 6,203.16 is: 9,302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.47 : 28,021.20 = 6,203.16 : x
  2. Step 2: Convert to fraction form
    18,685.47/28,021.20 = 6,203.16/x
  3. Step 3: Cross multiply
    18,685.47x = 28,021.20 × 6,203.16
  4. Step 4: Simplify right side
    18,685.47x = 173,819,986.99
  5. Step 5: Solve for x
    x = 173,819,986.99/18,685.47
  6. Step 6: Final answer
    x = 9,302.41

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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.