Home / 13,261.55-19,880.01-4,490.33

Finding the Fourth Proportional to 13,261.55, 19,880.01 and 4,490.33

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Solution

The fourth proportional to 13,261.55, 19,880.01 and 4,490.33 is: 6,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.55 : 19,880.01 = 4,490.33 : x
  2. Step 2: Convert to fraction form
    13,261.55/19,880.01 = 4,490.33/x
  3. Step 3: Cross multiply
    13,261.55x = 19,880.01 × 4,490.33
  4. Step 4: Simplify right side
    13,261.55x = 89,267,705.90
  5. Step 5: Solve for x
    x = 89,267,705.90/13,261.55
  6. Step 6: Final answer
    x = 6,731.32

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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.