Home / 21,400.36-29,542.80-14,242.19

Finding the Fourth Proportional to 21,400.36, 29,542.80 and 14,242.19

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Solution

The fourth proportional to 21,400.36, 29,542.80 and 14,242.19 is: 19,661.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.36 : 29,542.80 = 14,242.19 : x
  2. Step 2: Convert to fraction form
    21,400.36/29,542.80 = 14,242.19/x
  3. Step 3: Cross multiply
    21,400.36x = 29,542.80 × 14,242.19
  4. Step 4: Simplify right side
    21,400.36x = 420,754,244.09
  5. Step 5: Solve for x
    x = 420,754,244.09/21,400.36
  6. Step 6: Final answer
    x = 19,661.08

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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.