Home / 28,153.56-42,230.36-12,136.52

Finding the Fourth Proportional to 28,153.56, 42,230.36 and 12,136.52

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Solution

The fourth proportional to 28,153.56, 42,230.36 and 12,136.52 is: 18,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.56 : 42,230.36 = 12,136.52 : x
  2. Step 2: Convert to fraction form
    28,153.56/42,230.36 = 12,136.52/x
  3. Step 3: Cross multiply
    28,153.56x = 42,230.36 × 12,136.52
  4. Step 4: Simplify right side
    28,153.56x = 512,529,608.75
  5. Step 5: Solve for x
    x = 512,529,608.75/28,153.56
  6. Step 6: Final answer
    x = 18,204.79

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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.