Home / 13,459.51-20,157.96-12,992.32

Finding the Fourth Proportional to 13,459.51, 20,157.96 and 12,992.32

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Solution

The fourth proportional to 13,459.51, 20,157.96 and 12,992.32 is: 19,458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.51 : 20,157.96 = 12,992.32 : x
  2. Step 2: Convert to fraction form
    13,459.51/20,157.96 = 12,992.32/x
  3. Step 3: Cross multiply
    13,459.51x = 20,157.96 × 12,992.32
  4. Step 4: Simplify right side
    13,459.51x = 261,898,666.87
  5. Step 5: Solve for x
    x = 261,898,666.87/13,459.51
  6. Step 6: Final answer
    x = 19,458.26

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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.