Home / 43,518.90-65,271.34-11,921.57

Finding the Fourth Proportional to 43,518.90, 65,271.34 and 11,921.57

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Solution

The fourth proportional to 43,518.90, 65,271.34 and 11,921.57 is: 17,880.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,518.90 : 65,271.34 = 11,921.57 : x
  2. Step 2: Convert to fraction form
    43,518.90/65,271.34 = 11,921.57/x
  3. Step 3: Cross multiply
    43,518.90x = 65,271.34 × 11,921.57
  4. Step 4: Simplify right side
    43,518.90x = 778,136,623.27
  5. Step 5: Solve for x
    x = 778,136,623.27/43,518.90
  6. Step 6: Final answer
    x = 17,880.43

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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.