Home / 28,005.08-42,015.82-8,284.16

Finding the Fourth Proportional to 28,005.08, 42,015.82 and 8,284.16

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Solution

The fourth proportional to 28,005.08, 42,015.82 and 8,284.16 is: 12,428.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.08 : 42,015.82 = 8,284.16 : x
  2. Step 2: Convert to fraction form
    28,005.08/42,015.82 = 8,284.16/x
  3. Step 3: Cross multiply
    28,005.08x = 42,015.82 × 8,284.16
  4. Step 4: Simplify right side
    28,005.08x = 348,065,775.41
  5. Step 5: Solve for x
    x = 348,065,775.41/28,005.08
  6. Step 6: Final answer
    x = 12,428.67

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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.