Home / 13,512.03-20,254.18-5,189.81

Finding the Fourth Proportional to 13,512.03, 20,254.18 and 5,189.81

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Solution

The fourth proportional to 13,512.03, 20,254.18 and 5,189.81 is: 7,779.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.03 : 20,254.18 = 5,189.81 : x
  2. Step 2: Convert to fraction form
    13,512.03/20,254.18 = 5,189.81/x
  3. Step 3: Cross multiply
    13,512.03x = 20,254.18 × 5,189.81
  4. Step 4: Simplify right side
    13,512.03x = 105,115,345.91
  5. Step 5: Solve for x
    x = 105,115,345.91/13,512.03
  6. Step 6: Final answer
    x = 7,779.39

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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.