Home / 20,150.56-30,230.70-12,763.36

Finding the Fourth Proportional to 20,150.56, 30,230.70 and 12,763.36

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Solution

The fourth proportional to 20,150.56, 30,230.70 and 12,763.36 is: 19,148.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150.56 : 30,230.70 = 12,763.36 : x
  2. Step 2: Convert to fraction form
    20,150.56/30,230.70 = 12,763.36/x
  3. Step 3: Cross multiply
    20,150.56x = 30,230.70 × 12,763.36
  4. Step 4: Simplify right side
    20,150.56x = 385,845,307.15
  5. Step 5: Solve for x
    x = 385,845,307.15/20,150.56
  6. Step 6: Final answer
    x = 19,148.12

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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.