Home / 13,707.51-20,561.25-3,319.26

Finding the Fourth Proportional to 13,707.51, 20,561.25 and 3,319.26

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Solution

The fourth proportional to 13,707.51, 20,561.25 and 3,319.26 is: 4,978.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.51 : 20,561.25 = 3,319.26 : x
  2. Step 2: Convert to fraction form
    13,707.51/20,561.25 = 3,319.26/x
  3. Step 3: Cross multiply
    13,707.51x = 20,561.25 × 3,319.26
  4. Step 4: Simplify right side
    13,707.51x = 68,248,134.68
  5. Step 5: Solve for x
    x = 68,248,134.68/13,707.51
  6. Step 6: Final answer
    x = 4,978.89

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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.