Home / 21,569.10-29,739.69-18,579.84

Finding the Fourth Proportional to 21,569.10, 29,739.69 and 18,579.84

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Solution

The fourth proportional to 21,569.10, 29,739.69 and 18,579.84 is: 25,618.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.10 : 29,739.69 = 18,579.84 : x
  2. Step 2: Convert to fraction form
    21,569.10/29,739.69 = 18,579.84/x
  3. Step 3: Cross multiply
    21,569.10x = 29,739.69 × 18,579.84
  4. Step 4: Simplify right side
    21,569.10x = 552,558,681.85
  5. Step 5: Solve for x
    x = 552,558,681.85/21,569.10
  6. Step 6: Final answer
    x = 25,618.07

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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.