Home / 28,533.72-39,377.69-15,786.68

Finding the Fourth Proportional to 28,533.72, 39,377.69 and 15,786.68

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Solution

The fourth proportional to 28,533.72, 39,377.69 and 15,786.68 is: 21,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.72 : 39,377.69 = 15,786.68 : x
  2. Step 2: Convert to fraction form
    28,533.72/39,377.69 = 15,786.68/x
  3. Step 3: Cross multiply
    28,533.72x = 39,377.69 × 15,786.68
  4. Step 4: Simplify right side
    28,533.72x = 621,642,715.35
  5. Step 5: Solve for x
    x = 621,642,715.35/28,533.72
  6. Step 6: Final answer
    x = 21,786.25

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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.