Home / 13,129.93-19,682.61-5,728.33

Finding the Fourth Proportional to 13,129.93, 19,682.61 and 5,728.33

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Solution

The fourth proportional to 13,129.93, 19,682.61 and 5,728.33 is: 8,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.93 : 19,682.61 = 5,728.33 : x
  2. Step 2: Convert to fraction form
    13,129.93/19,682.61 = 5,728.33/x
  3. Step 3: Cross multiply
    13,129.93x = 19,682.61 × 5,728.33
  4. Step 4: Simplify right side
    13,129.93x = 112,748,485.34
  5. Step 5: Solve for x
    x = 112,748,485.34/13,129.93
  6. Step 6: Final answer
    x = 8,587.14

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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.