Home / 21,579.16-29,788.44-14,509.68

Finding the Fourth Proportional to 21,579.16, 29,788.44 and 14,509.68

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Solution

The fourth proportional to 21,579.16, 29,788.44 and 14,509.68 is: 20,029.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.16 : 29,788.44 = 14,509.68 : x
  2. Step 2: Convert to fraction form
    21,579.16/29,788.44 = 14,509.68/x
  3. Step 3: Cross multiply
    21,579.16x = 29,788.44 × 14,509.68
  4. Step 4: Simplify right side
    21,579.16x = 432,220,732.10
  5. Step 5: Solve for x
    x = 432,220,732.10/21,579.16
  6. Step 6: Final answer
    x = 20,029.54

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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.