Home / 28,051.89-42,070.43-8,325.75

Finding the Fourth Proportional to 28,051.89, 42,070.43 and 8,325.75

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Solution

The fourth proportional to 28,051.89, 42,070.43 and 8,325.75 is: 12,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.89 : 42,070.43 = 8,325.75 : x
  2. Step 2: Convert to fraction form
    28,051.89/42,070.43 = 8,325.75/x
  3. Step 3: Cross multiply
    28,051.89x = 42,070.43 × 8,325.75
  4. Step 4: Simplify right side
    28,051.89x = 350,267,840.94
  5. Step 5: Solve for x
    x = 350,267,840.94/28,051.89
  6. Step 6: Final answer
    x = 12,486.43

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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.