Home / 28,174.95-42,266.55-8,455.07

Finding the Fourth Proportional to 28,174.95, 42,266.55 and 8,455.07

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Solution

The fourth proportional to 28,174.95, 42,266.55 and 8,455.07 is: 12,683.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,174.95 : 42,266.55 = 8,455.07 : x
  2. Step 2: Convert to fraction form
    28,174.95/42,266.55 = 8,455.07/x
  3. Step 3: Cross multiply
    28,174.95x = 42,266.55 × 8,455.07
  4. Step 4: Simplify right side
    28,174.95x = 357,366,406.44
  5. Step 5: Solve for x
    x = 357,366,406.44/28,174.95
  6. Step 6: Final answer
    x = 12,683.83

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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.