Home / 21,639.93-32,461.38-12,768.23

Finding the Fourth Proportional to 21,639.93, 32,461.38 and 12,768.23

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Solution

The fourth proportional to 21,639.93, 32,461.38 and 12,768.23 is: 19,153.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.93 : 32,461.38 = 12,768.23 : x
  2. Step 2: Convert to fraction form
    21,639.93/32,461.38 = 12,768.23/x
  3. Step 3: Cross multiply
    21,639.93x = 32,461.38 × 12,768.23
  4. Step 4: Simplify right side
    21,639.93x = 414,474,365.96
  5. Step 5: Solve for x
    x = 414,474,365.96/21,639.93
  6. Step 6: Final answer
    x = 19,153.22

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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.