Home / 21,685.09-29,930.41-14,118.23

Finding the Fourth Proportional to 21,685.09, 29,930.41 and 14,118.23

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Solution

The fourth proportional to 21,685.09, 29,930.41 and 14,118.23 is: 19,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.09 : 29,930.41 = 14,118.23 : x
  2. Step 2: Convert to fraction form
    21,685.09/29,930.41 = 14,118.23/x
  3. Step 3: Cross multiply
    21,685.09x = 29,930.41 × 14,118.23
  4. Step 4: Simplify right side
    21,685.09x = 422,564,412.37
  5. Step 5: Solve for x
    x = 422,564,412.37/21,685.09
  6. Step 6: Final answer
    x = 19,486.40

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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.