Home / 28,208.90-42,322.20-16,976.50

Finding the Fourth Proportional to 28,208.90, 42,322.20 and 16,976.50

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Solution

The fourth proportional to 28,208.90, 42,322.20 and 16,976.50 is: 25,470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.90 : 42,322.20 = 16,976.50 : x
  2. Step 2: Convert to fraction form
    28,208.90/42,322.20 = 16,976.50/x
  3. Step 3: Cross multiply
    28,208.90x = 42,322.20 × 16,976.50
  4. Step 4: Simplify right side
    28,208.90x = 718,482,828.30
  5. Step 5: Solve for x
    x = 718,482,828.30/28,208.90
  6. Step 6: Final answer
    x = 25,470.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.