Home / 20,430.01-30,618.69-8,570.44

Finding the Fourth Proportional to 20,430.01, 30,618.69 and 8,570.44

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Solution

The fourth proportional to 20,430.01, 30,618.69 and 8,570.44 is: 12,844.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.01 : 30,618.69 = 8,570.44 : x
  2. Step 2: Convert to fraction form
    20,430.01/30,618.69 = 8,570.44/x
  3. Step 3: Cross multiply
    20,430.01x = 30,618.69 × 8,570.44
  4. Step 4: Simplify right side
    20,430.01x = 262,415,645.52
  5. Step 5: Solve for x
    x = 262,415,645.52/20,430.01
  6. Step 6: Final answer
    x = 12,844.62

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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.