Home / 13,490.84-20,237.64-3,630.20

Finding the Fourth Proportional to 13,490.84, 20,237.64 and 3,630.20

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Solution

The fourth proportional to 13,490.84, 20,237.64 and 3,630.20 is: 5,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.84 : 20,237.64 = 3,630.20 : x
  2. Step 2: Convert to fraction form
    13,490.84/20,237.64 = 3,630.20/x
  3. Step 3: Cross multiply
    13,490.84x = 20,237.64 × 3,630.20
  4. Step 4: Simplify right side
    13,490.84x = 73,466,680.73
  5. Step 5: Solve for x
    x = 73,466,680.73/13,490.84
  6. Step 6: Final answer
    x = 5,445.67

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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.