Home / 28,181.44-42,271.20-8,459.20

Finding the Fourth Proportional to 28,181.44, 42,271.20 and 8,459.20

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Solution

The fourth proportional to 28,181.44, 42,271.20 and 8,459.20 is: 12,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.44 : 42,271.20 = 8,459.20 : x
  2. Step 2: Convert to fraction form
    28,181.44/42,271.20 = 8,459.20/x
  3. Step 3: Cross multiply
    28,181.44x = 42,271.20 × 8,459.20
  4. Step 4: Simplify right side
    28,181.44x = 357,580,535.04
  5. Step 5: Solve for x
    x = 357,580,535.04/28,181.44
  6. Step 6: Final answer
    x = 12,688.51

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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.