Home / 28,039.90-42,059.55-8,318.64

Finding the Fourth Proportional to 28,039.90, 42,059.55 and 8,318.64

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Solution

The fourth proportional to 28,039.90, 42,059.55 and 8,318.64 is: 12,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.90 : 42,059.55 = 8,318.64 : x
  2. Step 2: Convert to fraction form
    28,039.90/42,059.55 = 8,318.64/x
  3. Step 3: Cross multiply
    28,039.90x = 42,059.55 × 8,318.64
  4. Step 4: Simplify right side
    28,039.90x = 349,878,255.01
  5. Step 5: Solve for x
    x = 349,878,255.01/28,039.90
  6. Step 6: Final answer
    x = 12,477.87

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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.