Home / 13,559.10-20,348.64-6,443.37

Finding the Fourth Proportional to 13,559.10, 20,348.64 and 6,443.37

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Solution

The fourth proportional to 13,559.10, 20,348.64 and 6,443.37 is: 9,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.10 : 20,348.64 = 6,443.37 : x
  2. Step 2: Convert to fraction form
    13,559.10/20,348.64 = 6,443.37/x
  3. Step 3: Cross multiply
    13,559.10x = 20,348.64 × 6,443.37
  4. Step 4: Simplify right side
    13,559.10x = 131,113,816.52
  5. Step 5: Solve for x
    x = 131,113,816.52/13,559.10
  6. Step 6: Final answer
    x = 9,669.80

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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.