Home / 21,309.08-29,434.19-17,290.80

Finding the Fourth Proportional to 21,309.08, 29,434.19 and 17,290.80

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Solution

The fourth proportional to 21,309.08, 29,434.19 and 17,290.80 is: 23,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.08 : 29,434.19 = 17,290.80 : x
  2. Step 2: Convert to fraction form
    21,309.08/29,434.19 = 17,290.80/x
  3. Step 3: Cross multiply
    21,309.08x = 29,434.19 × 17,290.80
  4. Step 4: Simplify right side
    21,309.08x = 508,940,606.00
  5. Step 5: Solve for x
    x = 508,940,606.00/21,309.08
  6. Step 6: Final answer
    x = 23,883.75

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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.