Home / 28,885.40-43,328.10-8,108.90

Finding the Fourth Proportional to 28,885.40, 43,328.10 and 8,108.90

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Solution

The fourth proportional to 28,885.40, 43,328.10 and 8,108.90 is: 12,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.40 : 43,328.10 = 8,108.90 : x
  2. Step 2: Convert to fraction form
    28,885.40/43,328.10 = 8,108.90/x
  3. Step 3: Cross multiply
    28,885.40x = 43,328.10 × 8,108.90
  4. Step 4: Simplify right side
    28,885.40x = 351,343,230.09
  5. Step 5: Solve for x
    x = 351,343,230.09/28,885.40
  6. Step 6: Final answer
    x = 12,163.35

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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.