Home / 28,179.63-42,266.21-8,458.16

Finding the Fourth Proportional to 28,179.63, 42,266.21 and 8,458.16

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Solution

The fourth proportional to 28,179.63, 42,266.21 and 8,458.16 is: 12,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.63 : 42,266.21 = 8,458.16 : x
  2. Step 2: Convert to fraction form
    28,179.63/42,266.21 = 8,458.16/x
  3. Step 3: Cross multiply
    28,179.63x = 42,266.21 × 8,458.16
  4. Step 4: Simplify right side
    28,179.63x = 357,494,113.15
  5. Step 5: Solve for x
    x = 357,494,113.15/28,179.63
  6. Step 6: Final answer
    x = 12,686.26

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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.