Home / 20,754.95-28,641.69-11,802.45

Finding the Fourth Proportional to 20,754.95, 28,641.69 and 11,802.45

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Solution

The fourth proportional to 20,754.95, 28,641.69 and 11,802.45 is: 16,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.95 : 28,641.69 = 11,802.45 : x
  2. Step 2: Convert to fraction form
    20,754.95/28,641.69 = 11,802.45/x
  3. Step 3: Cross multiply
    20,754.95x = 28,641.69 × 11,802.45
  4. Step 4: Simplify right side
    20,754.95x = 338,042,114.14
  5. Step 5: Solve for x
    x = 338,042,114.14/20,754.95
  6. Step 6: Final answer
    x = 16,287.30

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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.