Home / 20,397.06-30,570.99-10,530.96

Finding the Fourth Proportional to 20,397.06, 30,570.99 and 10,530.96

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Solution

The fourth proportional to 20,397.06, 30,570.99 and 10,530.96 is: 15,783.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.06 : 30,570.99 = 10,530.96 : x
  2. Step 2: Convert to fraction form
    20,397.06/30,570.99 = 10,530.96/x
  3. Step 3: Cross multiply
    20,397.06x = 30,570.99 × 10,530.96
  4. Step 4: Simplify right side
    20,397.06x = 321,941,718.72
  5. Step 5: Solve for x
    x = 321,941,718.72/20,397.06
  6. Step 6: Final answer
    x = 15,783.73

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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.