Home / 28,555.78-39,400.32-16,612.33

Finding the Fourth Proportional to 28,555.78, 39,400.32 and 16,612.33

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Solution

The fourth proportional to 28,555.78, 39,400.32 and 16,612.33 is: 22,921.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.78 : 39,400.32 = 16,612.33 : x
  2. Step 2: Convert to fraction form
    28,555.78/39,400.32 = 16,612.33/x
  3. Step 3: Cross multiply
    28,555.78x = 39,400.32 × 16,612.33
  4. Step 4: Simplify right side
    28,555.78x = 654,531,117.95
  5. Step 5: Solve for x
    x = 654,531,117.95/28,555.78
  6. Step 6: Final answer
    x = 22,921.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.