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Finding the Fourth Proportional to 13,459.92, 20,189.88 and 10,741.20

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Solution

The fourth proportional to 13,459.92, 20,189.88 and 10,741.20 is: 16,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.92 : 20,189.88 = 10,741.20 : x
  2. Step 2: Convert to fraction form
    13,459.92/20,189.88 = 10,741.20/x
  3. Step 3: Cross multiply
    13,459.92x = 20,189.88 × 10,741.20
  4. Step 4: Simplify right side
    13,459.92x = 216,863,539.06
  5. Step 5: Solve for x
    x = 216,863,539.06/13,459.92
  6. Step 6: Final answer
    x = 16,111.80

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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.