Home / 28,189.96-42,280.36-8,465.04

Finding the Fourth Proportional to 28,189.96, 42,280.36 and 8,465.04

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Solution

The fourth proportional to 28,189.96, 42,280.36 and 8,465.04 is: 12,696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.96 : 42,280.36 = 8,465.04 : x
  2. Step 2: Convert to fraction form
    28,189.96/42,280.36 = 8,465.04/x
  3. Step 3: Cross multiply
    28,189.96x = 42,280.36 × 8,465.04
  4. Step 4: Simplify right side
    28,189.96x = 357,904,917.45
  5. Step 5: Solve for x
    x = 357,904,917.45/28,189.96
  6. Step 6: Final answer
    x = 12,696.19

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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.