Home / 28,161.12-42,235.56-8,434.38

Finding the Fourth Proportional to 28,161.12, 42,235.56 and 8,434.38

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Solution

The fourth proportional to 28,161.12, 42,235.56 and 8,434.38 is: 12,649.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.12 : 42,235.56 = 8,434.38 : x
  2. Step 2: Convert to fraction form
    28,161.12/42,235.56 = 8,434.38/x
  3. Step 3: Cross multiply
    28,161.12x = 42,235.56 × 8,434.38
  4. Step 4: Simplify right side
    28,161.12x = 356,230,762.55
  5. Step 5: Solve for x
    x = 356,230,762.55/28,161.12
  6. Step 6: Final answer
    x = 12,649.74

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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.