Home / 13,406.20-20,111.10-4,643.80

Finding the Fourth Proportional to 13,406.20, 20,111.10 and 4,643.80

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Solution

The fourth proportional to 13,406.20, 20,111.10 and 4,643.80 is: 6,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.20 : 20,111.10 = 4,643.80 : x
  2. Step 2: Convert to fraction form
    13,406.20/20,111.10 = 4,643.80/x
  3. Step 3: Cross multiply
    13,406.20x = 20,111.10 × 4,643.80
  4. Step 4: Simplify right side
    13,406.20x = 93,391,926.18
  5. Step 5: Solve for x
    x = 93,391,926.18/13,406.20
  6. Step 6: Final answer
    x = 6,966.32

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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.