Home / 28,721.09-39,634.74-16,145.84

Finding the Fourth Proportional to 28,721.09, 39,634.74 and 16,145.84

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Solution

The fourth proportional to 28,721.09, 39,634.74 and 16,145.84 is: 22,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.09 : 39,634.74 = 16,145.84 : x
  2. Step 2: Convert to fraction form
    28,721.09/39,634.74 = 16,145.84/x
  3. Step 3: Cross multiply
    28,721.09x = 39,634.74 × 16,145.84
  4. Step 4: Simplify right side
    28,721.09x = 639,935,972.31
  5. Step 5: Solve for x
    x = 639,935,972.31/28,721.09
  6. Step 6: Final answer
    x = 22,281.05

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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.