Home / 20,346.16-30,530.78-10,986.06

Finding the Fourth Proportional to 20,346.16, 30,530.78 and 10,986.06

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Solution

The fourth proportional to 20,346.16, 30,530.78 and 10,986.06 is: 16,485.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.16 : 30,530.78 = 10,986.06 : x
  2. Step 2: Convert to fraction form
    20,346.16/30,530.78 = 10,986.06/x
  3. Step 3: Cross multiply
    20,346.16x = 30,530.78 × 10,986.06
  4. Step 4: Simplify right side
    20,346.16x = 335,412,980.93
  5. Step 5: Solve for x
    x = 335,412,980.93/20,346.16
  6. Step 6: Final answer
    x = 16,485.32

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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.