Home / 21,016.80-29,020.08-14,316.48

Finding the Fourth Proportional to 21,016.80, 29,020.08 and 14,316.48

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Solution

The fourth proportional to 21,016.80, 29,020.08 and 14,316.48 is: 19,768.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.80 : 29,020.08 = 14,316.48 : x
  2. Step 2: Convert to fraction form
    21,016.80/29,020.08 = 14,316.48/x
  3. Step 3: Cross multiply
    21,016.80x = 29,020.08 × 14,316.48
  4. Step 4: Simplify right side
    21,016.80x = 415,465,394.92
  5. Step 5: Solve for x
    x = 415,465,394.92/21,016.80
  6. Step 6: Final answer
    x = 19,768.25

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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.