Home / 28,217.07-42,317.09-8,490.39

Finding the Fourth Proportional to 28,217.07, 42,317.09 and 8,490.39

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Solution

The fourth proportional to 28,217.07, 42,317.09 and 8,490.39 is: 12,733.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.07 : 42,317.09 = 8,490.39 : x
  2. Step 2: Convert to fraction form
    28,217.07/42,317.09 = 8,490.39/x
  3. Step 3: Cross multiply
    28,217.07x = 42,317.09 × 8,490.39
  4. Step 4: Simplify right side
    28,217.07x = 359,288,555.31
  5. Step 5: Solve for x
    x = 359,288,555.31/28,217.07
  6. Step 6: Final answer
    x = 12,733.02

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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.