Home / 18,974.93-28,479.80-9,621.45

Finding the Fourth Proportional to 18,974.93, 28,479.80 and 9,621.45

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Solution

The fourth proportional to 18,974.93, 28,479.80 and 9,621.45 is: 14,441.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.93 : 28,479.80 = 9,621.45 : x
  2. Step 2: Convert to fraction form
    18,974.93/28,479.80 = 9,621.45/x
  3. Step 3: Cross multiply
    18,974.93x = 28,479.80 × 9,621.45
  4. Step 4: Simplify right side
    18,974.93x = 274,016,995.76
  5. Step 5: Solve for x
    x = 274,016,995.76/18,974.93
  6. Step 6: Final answer
    x = 14,441.01

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1.5x scale

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.