Home / 28,355.23-42,539.18-8,635.32

Finding the Fourth Proportional to 28,355.23, 42,539.18 and 8,635.32

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Solution

The fourth proportional to 28,355.23, 42,539.18 and 8,635.32 is: 12,954.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.23 : 42,539.18 = 8,635.32 : x
  2. Step 2: Convert to fraction form
    28,355.23/42,539.18 = 8,635.32/x
  3. Step 3: Cross multiply
    28,355.23x = 42,539.18 × 8,635.32
  4. Step 4: Simplify right side
    28,355.23x = 367,339,431.84
  5. Step 5: Solve for x
    x = 367,339,431.84/28,355.23
  6. Step 6: Final answer
    x = 12,954.91

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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.