Home / 28,464.94-42,704.34-12,878.38

Finding the Fourth Proportional to 28,464.94, 42,704.34 and 12,878.38

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Solution

The fourth proportional to 28,464.94, 42,704.34 and 12,878.38 is: 19,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.94 : 42,704.34 = 12,878.38 : x
  2. Step 2: Convert to fraction form
    28,464.94/42,704.34 = 12,878.38/x
  3. Step 3: Cross multiply
    28,464.94x = 42,704.34 × 12,878.38
  4. Step 4: Simplify right side
    28,464.94x = 549,962,718.17
  5. Step 5: Solve for x
    x = 549,962,718.17/28,464.94
  6. Step 6: Final answer
    x = 19,320.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.