Home / 28,490.36-42,728.34-8,495.24

Finding the Fourth Proportional to 28,490.36, 42,728.34 and 8,495.24

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Solution

The fourth proportional to 28,490.36, 42,728.34 and 8,495.24 is: 12,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.36 : 42,728.34 = 8,495.24 : x
  2. Step 2: Convert to fraction form
    28,490.36/42,728.34 = 8,495.24/x
  3. Step 3: Cross multiply
    28,490.36x = 42,728.34 × 8,495.24
  4. Step 4: Simplify right side
    28,490.36x = 362,987,503.10
  5. Step 5: Solve for x
    x = 362,987,503.10/28,490.36
  6. Step 6: Final answer
    x = 12,740.71

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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.