Home / 21,016.94-29,004.45-11,585.48

Finding the Fourth Proportional to 21,016.94, 29,004.45 and 11,585.48

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Solution

The fourth proportional to 21,016.94, 29,004.45 and 11,585.48 is: 15,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.94 : 29,004.45 = 11,585.48 : x
  2. Step 2: Convert to fraction form
    21,016.94/29,004.45 = 11,585.48/x
  3. Step 3: Cross multiply
    21,016.94x = 29,004.45 × 11,585.48
  4. Step 4: Simplify right side
    21,016.94x = 336,030,475.39
  5. Step 5: Solve for x
    x = 336,030,475.39/21,016.94
  6. Step 6: Final answer
    x = 15,988.55

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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.