Home / 28,181.60-42,273.18-8,460.17

Finding the Fourth Proportional to 28,181.60, 42,273.18 and 8,460.17

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Solution

The fourth proportional to 28,181.60, 42,273.18 and 8,460.17 is: 12,690.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.60 : 42,273.18 = 8,460.17 : x
  2. Step 2: Convert to fraction form
    28,181.60/42,273.18 = 8,460.17/x
  3. Step 3: Cross multiply
    28,181.60x = 42,273.18 × 8,460.17
  4. Step 4: Simplify right side
    28,181.60x = 357,638,077.87
  5. Step 5: Solve for x
    x = 357,638,077.87/28,181.60
  6. Step 6: Final answer
    x = 12,690.48

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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.