Home / 13,539.24-20,308.86-8,921.16

Finding the Fourth Proportional to 13,539.24, 20,308.86 and 8,921.16

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Solution

The fourth proportional to 13,539.24, 20,308.86 and 8,921.16 is: 13,381.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.24 : 20,308.86 = 8,921.16 : x
  2. Step 2: Convert to fraction form
    13,539.24/20,308.86 = 8,921.16/x
  3. Step 3: Cross multiply
    13,539.24x = 20,308.86 × 8,921.16
  4. Step 4: Simplify right side
    13,539.24x = 181,178,589.48
  5. Step 5: Solve for x
    x = 181,178,589.48/13,539.24
  6. Step 6: Final answer
    x = 13,381.74

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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.