Home / 20,172.02-27,837-11,219.45

Finding the Fourth Proportional to 20,172.02, 27,837 and 11,219.45

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Solution

The fourth proportional to 20,172.02, 27,837 and 11,219.45 is: 15,482.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.02 : 27,837 = 11,219.45 : x
  2. Step 2: Convert to fraction form
    20,172.02/27,837 = 11,219.45/x
  3. Step 3: Cross multiply
    20,172.02x = 27,837 × 11,219.45
  4. Step 4: Simplify right side
    20,172.02x = 312,315,690.47
  5. Step 5: Solve for x
    x = 312,315,690.47/20,172.02
  6. Step 6: Final answer
    x = 15,482.62

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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.