Home / 13,563.12-20,345.36-4,209.51

Finding the Fourth Proportional to 13,563.12, 20,345.36 and 4,209.51

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Solution

The fourth proportional to 13,563.12, 20,345.36 and 4,209.51 is: 6,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.12 : 20,345.36 = 4,209.51 : x
  2. Step 2: Convert to fraction form
    13,563.12/20,345.36 = 4,209.51/x
  3. Step 3: Cross multiply
    13,563.12x = 20,345.36 × 4,209.51
  4. Step 4: Simplify right side
    13,563.12x = 85,643,975.33
  5. Step 5: Solve for x
    x = 85,643,975.33/13,563.12
  6. Step 6: Final answer
    x = 6,314.47

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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.