Home / 28,745.11-39,666.93-20,250.64

Finding the Fourth Proportional to 28,745.11, 39,666.93 and 20,250.64

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Solution

The fourth proportional to 28,745.11, 39,666.93 and 20,250.64 is: 27,944.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.11 : 39,666.93 = 20,250.64 : x
  2. Step 2: Convert to fraction form
    28,745.11/39,666.93 = 20,250.64/x
  3. Step 3: Cross multiply
    28,745.11x = 39,666.93 × 20,250.64
  4. Step 4: Simplify right side
    28,745.11x = 803,280,521.00
  5. Step 5: Solve for x
    x = 803,280,521.00/28,745.11
  6. Step 6: Final answer
    x = 27,944.95

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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.