Home / 20,208.48-27,888.84-12,251.40

Finding the Fourth Proportional to 20,208.48, 27,888.84 and 12,251.40

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Solution

The fourth proportional to 20,208.48, 27,888.84 and 12,251.40 is: 16,907.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.48 : 27,888.84 = 12,251.40 : x
  2. Step 2: Convert to fraction form
    20,208.48/27,888.84 = 12,251.40/x
  3. Step 3: Cross multiply
    20,208.48x = 27,888.84 × 12,251.40
  4. Step 4: Simplify right side
    20,208.48x = 341,677,334.38
  5. Step 5: Solve for x
    x = 341,677,334.38/20,208.48
  6. Step 6: Final answer
    x = 16,907.62

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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.