Home / 13,410.50-20,115.76-5,619.32

Finding the Fourth Proportional to 13,410.50, 20,115.76 and 5,619.32

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Solution

The fourth proportional to 13,410.50, 20,115.76 and 5,619.32 is: 8,428.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.50 : 20,115.76 = 5,619.32 : x
  2. Step 2: Convert to fraction form
    13,410.50/20,115.76 = 5,619.32/x
  3. Step 3: Cross multiply
    13,410.50x = 20,115.76 × 5,619.32
  4. Step 4: Simplify right side
    13,410.50x = 113,036,892.48
  5. Step 5: Solve for x
    x = 113,036,892.48/13,410.50
  6. Step 6: Final answer
    x = 8,428.98

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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.