Home / 28,457.70-39,271.66-15,882.44

Finding the Fourth Proportional to 28,457.70, 39,271.66 and 15,882.44

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Solution

The fourth proportional to 28,457.70, 39,271.66 and 15,882.44 is: 21,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.70 : 39,271.66 = 15,882.44 : x
  2. Step 2: Convert to fraction form
    28,457.70/39,271.66 = 15,882.44/x
  3. Step 3: Cross multiply
    28,457.70x = 39,271.66 × 15,882.44
  4. Step 4: Simplify right side
    28,457.70x = 623,729,783.65
  5. Step 5: Solve for x
    x = 623,729,783.65/28,457.70
  6. Step 6: Final answer
    x = 21,917.79

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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.