Home / 20,570.03-30,855.04-4,987.65

Finding the Fourth Proportional to 20,570.03, 30,855.04 and 4,987.65

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Solution

The fourth proportional to 20,570.03, 30,855.04 and 4,987.65 is: 7,481.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.03 : 30,855.04 = 4,987.65 : x
  2. Step 2: Convert to fraction form
    20,570.03/30,855.04 = 4,987.65/x
  3. Step 3: Cross multiply
    20,570.03x = 30,855.04 × 4,987.65
  4. Step 4: Simplify right side
    20,570.03x = 153,894,140.26
  5. Step 5: Solve for x
    x = 153,894,140.26/20,570.03
  6. Step 6: Final answer
    x = 7,481.48

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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.