Home / 21,351.51-29,465.24-11,920.59

Finding the Fourth Proportional to 21,351.51, 29,465.24 and 11,920.59

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Solution

The fourth proportional to 21,351.51, 29,465.24 and 11,920.59 is: 16,450.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351.51 : 29,465.24 = 11,920.59 : x
  2. Step 2: Convert to fraction form
    21,351.51/29,465.24 = 11,920.59/x
  3. Step 3: Cross multiply
    21,351.51x = 29,465.24 × 11,920.59
  4. Step 4: Simplify right side
    21,351.51x = 351,242,985.69
  5. Step 5: Solve for x
    x = 351,242,985.69/21,351.51
  6. Step 6: Final answer
    x = 16,450.50

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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.