Home / 28,289.95-42,372.60-18,885.92

Finding the Fourth Proportional to 28,289.95, 42,372.60 and 18,885.92

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Solution

The fourth proportional to 28,289.95, 42,372.60 and 18,885.92 is: 28,287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.95 : 42,372.60 = 18,885.92 : x
  2. Step 2: Convert to fraction form
    28,289.95/42,372.60 = 18,885.92/x
  3. Step 3: Cross multiply
    28,289.95x = 42,372.60 × 18,885.92
  4. Step 4: Simplify right side
    28,289.95x = 800,245,533.79
  5. Step 5: Solve for x
    x = 800,245,533.79/28,289.95
  6. Step 6: Final answer
    x = 28,287.27

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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.