Home / 28,387.79-39,173.25-16,448.99

Finding the Fourth Proportional to 28,387.79, 39,173.25 and 16,448.99

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Solution

The fourth proportional to 28,387.79, 39,173.25 and 16,448.99 is: 22,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.79 : 39,173.25 = 16,448.99 : x
  2. Step 2: Convert to fraction form
    28,387.79/39,173.25 = 16,448.99/x
  3. Step 3: Cross multiply
    28,387.79x = 39,173.25 × 16,448.99
  4. Step 4: Simplify right side
    28,387.79x = 644,360,201.65
  5. Step 5: Solve for x
    x = 644,360,201.65/28,387.79
  6. Step 6: Final answer
    x = 22,698.50

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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.