Home / 13,705.80-20,558.70-4,941.60

Finding the Fourth Proportional to 13,705.80, 20,558.70 and 4,941.60

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Solution

The fourth proportional to 13,705.80, 20,558.70 and 4,941.60 is: 7,412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.80 : 20,558.70 = 4,941.60 : x
  2. Step 2: Convert to fraction form
    13,705.80/20,558.70 = 4,941.60/x
  3. Step 3: Cross multiply
    13,705.80x = 20,558.70 × 4,941.60
  4. Step 4: Simplify right side
    13,705.80x = 101,592,871.92
  5. Step 5: Solve for x
    x = 101,592,871.92/13,705.80
  6. Step 6: Final answer
    x = 7,412.40

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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.