Home / 21,953.12-30,295.05-11,881.34

Finding the Fourth Proportional to 21,953.12, 30,295.05 and 11,881.34

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Solution

The fourth proportional to 21,953.12, 30,295.05 and 11,881.34 is: 16,396.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.12 : 30,295.05 = 11,881.34 : x
  2. Step 2: Convert to fraction form
    21,953.12/30,295.05 = 11,881.34/x
  3. Step 3: Cross multiply
    21,953.12x = 30,295.05 × 11,881.34
  4. Step 4: Simplify right side
    21,953.12x = 359,945,637.89
  5. Step 5: Solve for x
    x = 359,945,637.89/21,953.12
  6. Step 6: Final answer
    x = 16,396.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.