Home / 28,020.21-38,667.02-16,083.78

Finding the Fourth Proportional to 28,020.21, 38,667.02 and 16,083.78

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Solution

The fourth proportional to 28,020.21, 38,667.02 and 16,083.78 is: 22,195.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.21 : 38,667.02 = 16,083.78 : x
  2. Step 2: Convert to fraction form
    28,020.21/38,667.02 = 16,083.78/x
  3. Step 3: Cross multiply
    28,020.21x = 38,667.02 × 16,083.78
  4. Step 4: Simplify right side
    28,020.21x = 621,911,762.52
  5. Step 5: Solve for x
    x = 621,911,762.52/28,020.21
  6. Step 6: Final answer
    x = 22,195.11

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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.