Home / 21,210.51-29,269.22-11,648.54

Finding the Fourth Proportional to 21,210.51, 29,269.22 and 11,648.54

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Solution

The fourth proportional to 21,210.51, 29,269.22 and 11,648.54 is: 16,074.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.51 : 29,269.22 = 11,648.54 : x
  2. Step 2: Convert to fraction form
    21,210.51/29,269.22 = 11,648.54/x
  3. Step 3: Cross multiply
    21,210.51x = 29,269.22 × 11,648.54
  4. Step 4: Simplify right side
    21,210.51x = 340,943,694.87
  5. Step 5: Solve for x
    x = 340,943,694.87/21,210.51
  6. Step 6: Final answer
    x = 16,074.28

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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.