Home / 28,533.66-39,375.72-15,787.32

Finding the Fourth Proportional to 28,533.66, 39,375.72 and 15,787.32

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Solution

The fourth proportional to 28,533.66, 39,375.72 and 15,787.32 is: 21,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.66 : 39,375.72 = 15,787.32 : x
  2. Step 2: Convert to fraction form
    28,533.66/39,375.72 = 15,787.32/x
  3. Step 3: Cross multiply
    28,533.66x = 39,375.72 × 15,787.32
  4. Step 4: Simplify right side
    28,533.66x = 621,637,091.87
  5. Step 5: Solve for x
    x = 621,637,091.87/28,533.66
  6. Step 6: Final answer
    x = 21,786.10

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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.