Home / 28,181.35-42,272.81-8,459.92

Finding the Fourth Proportional to 28,181.35, 42,272.81 and 8,459.92

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Solution

The fourth proportional to 28,181.35, 42,272.81 and 8,459.92 is: 12,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.35 : 42,272.81 = 8,459.92 : x
  2. Step 2: Convert to fraction form
    28,181.35/42,272.81 = 8,459.92/x
  3. Step 3: Cross multiply
    28,181.35x = 42,272.81 × 8,459.92
  4. Step 4: Simplify right side
    28,181.35x = 357,624,337.11
  5. Step 5: Solve for x
    x = 357,624,337.11/28,181.35
  6. Step 6: Final answer
    x = 12,690.11

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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.