Home / 13,871.86-20,802.96-5,549.72

Finding the Fourth Proportional to 13,871.86, 20,802.96 and 5,549.72

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Solution

The fourth proportional to 13,871.86, 20,802.96 and 5,549.72 is: 8,322.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.86 : 20,802.96 = 5,549.72 : x
  2. Step 2: Convert to fraction form
    13,871.86/20,802.96 = 5,549.72/x
  3. Step 3: Cross multiply
    13,871.86x = 20,802.96 × 5,549.72
  4. Step 4: Simplify right side
    13,871.86x = 115,450,499.16
  5. Step 5: Solve for x
    x = 115,450,499.16/13,871.86
  6. Step 6: Final answer
    x = 8,322.64

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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.