Home / 28,172.66-42,270.84-12,369.56

Finding the Fourth Proportional to 28,172.66, 42,270.84 and 12,369.56

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Solution

The fourth proportional to 28,172.66, 42,270.84 and 12,369.56 is: 18,559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.66 : 42,270.84 = 12,369.56 : x
  2. Step 2: Convert to fraction form
    28,172.66/42,270.84 = 12,369.56/x
  3. Step 3: Cross multiply
    28,172.66x = 42,270.84 × 12,369.56
  4. Step 4: Simplify right side
    28,172.66x = 522,871,691.63
  5. Step 5: Solve for x
    x = 522,871,691.63/28,172.66
  6. Step 6: Final answer
    x = 18,559.54

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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.