Home / 13,676.04-20,455.74-8,398.08

Finding the Fourth Proportional to 13,676.04, 20,455.74 and 8,398.08

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Solution

The fourth proportional to 13,676.04, 20,455.74 and 8,398.08 is: 12,561.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.04 : 20,455.74 = 8,398.08 : x
  2. Step 2: Convert to fraction form
    13,676.04/20,455.74 = 8,398.08/x
  3. Step 3: Cross multiply
    13,676.04x = 20,455.74 × 8,398.08
  4. Step 4: Simplify right side
    13,676.04x = 171,788,940.98
  5. Step 5: Solve for x
    x = 171,788,940.98/13,676.04
  6. Step 6: Final answer
    x = 12,561.31

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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.