Home / 28,967.30-39,975.84-16,221

Finding the Fourth Proportional to 28,967.30, 39,975.84 and 16,221

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Solution

The fourth proportional to 28,967.30, 39,975.84 and 16,221 is: 22,385.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.30 : 39,975.84 = 16,221 : x
  2. Step 2: Convert to fraction form
    28,967.30/39,975.84 = 16,221/x
  3. Step 3: Cross multiply
    28,967.30x = 39,975.84 × 16,221
  4. Step 4: Simplify right side
    28,967.30x = 648,448,100.64
  5. Step 5: Solve for x
    x = 648,448,100.64/28,967.30
  6. Step 6: Final answer
    x = 22,385.52

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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.