Home / 28,631.64-39,503.59-18,560.51

Finding the Fourth Proportional to 28,631.64, 39,503.59 and 18,560.51

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Solution

The fourth proportional to 28,631.64, 39,503.59 and 18,560.51 is: 25,608.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.64 : 39,503.59 = 18,560.51 : x
  2. Step 2: Convert to fraction form
    28,631.64/39,503.59 = 18,560.51/x
  3. Step 3: Cross multiply
    28,631.64x = 39,503.59 × 18,560.51
  4. Step 4: Simplify right side
    28,631.64x = 733,206,533.31
  5. Step 5: Solve for x
    x = 733,206,533.31/28,631.64
  6. Step 6: Final answer
    x = 25,608.26

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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.