Home / 28,106.54-38,786.55-15,359.45

Finding the Fourth Proportional to 28,106.54, 38,786.55 and 15,359.45

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Solution

The fourth proportional to 28,106.54, 38,786.55 and 15,359.45 is: 21,195.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.54 : 38,786.55 = 15,359.45 : x
  2. Step 2: Convert to fraction form
    28,106.54/38,786.55 = 15,359.45/x
  3. Step 3: Cross multiply
    28,106.54x = 38,786.55 × 15,359.45
  4. Step 4: Simplify right side
    28,106.54x = 595,739,823.87
  5. Step 5: Solve for x
    x = 595,739,823.87/28,106.54
  6. Step 6: Final answer
    x = 21,195.77

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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.