Home / 13,507.92-20,257.94-5,187.32

Finding the Fourth Proportional to 13,507.92, 20,257.94 and 5,187.32

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Solution

The fourth proportional to 13,507.92, 20,257.94 and 5,187.32 is: 7,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.92 : 20,257.94 = 5,187.32 : x
  2. Step 2: Convert to fraction form
    13,507.92/20,257.94 = 5,187.32/x
  3. Step 3: Cross multiply
    13,507.92x = 20,257.94 × 5,187.32
  4. Step 4: Simplify right side
    13,507.92x = 105,084,417.32
  5. Step 5: Solve for x
    x = 105,084,417.32/13,507.92
  6. Step 6: Final answer
    x = 7,779.47

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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.