Home / 28,800.64-39,745.20-16,225.12

Finding the Fourth Proportional to 28,800.64, 39,745.20 and 16,225.12

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Solution

The fourth proportional to 28,800.64, 39,745.20 and 16,225.12 is: 22,390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,800.64 : 39,745.20 = 16,225.12 : x
  2. Step 2: Convert to fraction form
    28,800.64/39,745.20 = 16,225.12/x
  3. Step 3: Cross multiply
    28,800.64x = 39,745.20 × 16,225.12
  4. Step 4: Simplify right side
    28,800.64x = 644,870,639.42
  5. Step 5: Solve for x
    x = 644,870,639.42/28,800.64
  6. Step 6: Final answer
    x = 22,390.84

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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.