Home / 20,319.16-30,480.90-5,528.32

Finding the Fourth Proportional to 20,319.16, 30,480.90 and 5,528.32

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Solution

The fourth proportional to 20,319.16, 30,480.90 and 5,528.32 is: 8,293.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.16 : 30,480.90 = 5,528.32 : x
  2. Step 2: Convert to fraction form
    20,319.16/30,480.90 = 5,528.32/x
  3. Step 3: Cross multiply
    20,319.16x = 30,480.90 × 5,528.32
  4. Step 4: Simplify right side
    20,319.16x = 168,508,169.09
  5. Step 5: Solve for x
    x = 168,508,169.09/20,319.16
  6. Step 6: Final answer
    x = 8,293.07

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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.