Home / 28,313.40-42,459.30-8,585.40

Finding the Fourth Proportional to 28,313.40, 42,459.30 and 8,585.40

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Solution

The fourth proportional to 28,313.40, 42,459.30 and 8,585.40 is: 12,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.40 : 42,459.30 = 8,585.40 : x
  2. Step 2: Convert to fraction form
    28,313.40/42,459.30 = 8,585.40/x
  3. Step 3: Cross multiply
    28,313.40x = 42,459.30 × 8,585.40
  4. Step 4: Simplify right side
    28,313.40x = 364,530,074.22
  5. Step 5: Solve for x
    x = 364,530,074.22/28,313.40
  6. Step 6: Final answer
    x = 12,874.83

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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.