Home / 28,020.21-38,667.63-15,273.39

Finding the Fourth Proportional to 28,020.21, 38,667.63 and 15,273.39

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Solution

The fourth proportional to 28,020.21, 38,667.63 and 15,273.39 is: 21,077.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.21 : 38,667.63 = 15,273.39 : x
  2. Step 2: Convert to fraction form
    28,020.21/38,667.63 = 15,273.39/x
  3. Step 3: Cross multiply
    28,020.21x = 38,667.63 × 15,273.39
  4. Step 4: Simplify right side
    28,020.21x = 590,585,658.51
  5. Step 5: Solve for x
    x = 590,585,658.51/28,020.21
  6. Step 6: Final answer
    x = 21,077.14

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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.