Home / 21,388.84-29,516.58-11,957.56

Finding the Fourth Proportional to 21,388.84, 29,516.58 and 11,957.56

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Solution

The fourth proportional to 21,388.84, 29,516.58 and 11,957.56 is: 16,501.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.84 : 29,516.58 = 11,957.56 : x
  2. Step 2: Convert to fraction form
    21,388.84/29,516.58 = 11,957.56/x
  3. Step 3: Cross multiply
    21,388.84x = 29,516.58 × 11,957.56
  4. Step 4: Simplify right side
    21,388.84x = 352,946,276.34
  5. Step 5: Solve for x
    x = 352,946,276.34/21,388.84
  6. Step 6: Final answer
    x = 16,501.42

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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.