Home / 21,392.05-29,523.50-12,898.51

Finding the Fourth Proportional to 21,392.05, 29,523.50 and 12,898.51

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Solution

The fourth proportional to 21,392.05, 29,523.50 and 12,898.51 is: 17,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.05 : 29,523.50 = 12,898.51 : x
  2. Step 2: Convert to fraction form
    21,392.05/29,523.50 = 12,898.51/x
  3. Step 3: Cross multiply
    21,392.05x = 29,523.50 × 12,898.51
  4. Step 4: Simplify right side
    21,392.05x = 380,809,021.68
  5. Step 5: Solve for x
    x = 380,809,021.68/21,392.05
  6. Step 6: Final answer
    x = 17,801.43

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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.