Home / 13,421.32-20,041.60-10,961.02

Finding the Fourth Proportional to 13,421.32, 20,041.60 and 10,961.02

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Solution

The fourth proportional to 13,421.32, 20,041.60 and 10,961.02 is: 16,367.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.32 : 20,041.60 = 10,961.02 : x
  2. Step 2: Convert to fraction form
    13,421.32/20,041.60 = 10,961.02/x
  3. Step 3: Cross multiply
    13,421.32x = 20,041.60 × 10,961.02
  4. Step 4: Simplify right side
    13,421.32x = 219,676,378.43
  5. Step 5: Solve for x
    x = 219,676,378.43/13,421.32
  6. Step 6: Final answer
    x = 16,367.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.