Home / 55,739.90-83,609.53-13,620.20

Finding the Fourth Proportional to 55,739.90, 83,609.53 and 13,620.20

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Solution

The fourth proportional to 55,739.90, 83,609.53 and 13,620.20 is: 20,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,739.90 : 83,609.53 = 13,620.20 : x
  2. Step 2: Convert to fraction form
    55,739.90/83,609.53 = 13,620.20/x
  3. Step 3: Cross multiply
    55,739.90x = 83,609.53 × 13,620.20
  4. Step 4: Simplify right side
    55,739.90x = 1,138,778,615.33
  5. Step 5: Solve for x
    x = 1,138,778,615.33/55,739.90
  6. Step 6: Final answer
    x = 20,430.22

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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.