Home / 21,750.90-30,014.81-12,796.67

Finding the Fourth Proportional to 21,750.90, 30,014.81 and 12,796.67

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Solution

The fourth proportional to 21,750.90, 30,014.81 and 12,796.67 is: 17,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.90 : 30,014.81 = 12,796.67 : x
  2. Step 2: Convert to fraction form
    21,750.90/30,014.81 = 12,796.67/x
  3. Step 3: Cross multiply
    21,750.90x = 30,014.81 × 12,796.67
  4. Step 4: Simplify right side
    21,750.90x = 384,089,404.63
  5. Step 5: Solve for x
    x = 384,089,404.63/21,750.90
  6. Step 6: Final answer
    x = 17,658.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.