Home / 20,570.44-30,855.76-4,988.06

Finding the Fourth Proportional to 20,570.44, 30,855.76 and 4,988.06

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Solution

The fourth proportional to 20,570.44, 30,855.76 and 4,988.06 is: 7,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.44 : 30,855.76 = 4,988.06 : x
  2. Step 2: Convert to fraction form
    20,570.44/30,855.76 = 4,988.06/x
  3. Step 3: Cross multiply
    20,570.44x = 30,855.76 × 4,988.06
  4. Step 4: Simplify right side
    20,570.44x = 153,910,382.23
  5. Step 5: Solve for x
    x = 153,910,382.23/20,570.44
  6. Step 6: Final answer
    x = 7,482.11

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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.