Home / 13,455.82-20,176.98-8,535.34

Finding the Fourth Proportional to 13,455.82, 20,176.98 and 8,535.34

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Solution

The fourth proportional to 13,455.82, 20,176.98 and 8,535.34 is: 12,798.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.82 : 20,176.98 = 8,535.34 : x
  2. Step 2: Convert to fraction form
    13,455.82/20,176.98 = 8,535.34/x
  3. Step 3: Cross multiply
    13,455.82x = 20,176.98 × 8,535.34
  4. Step 4: Simplify right side
    13,455.82x = 172,217,384.47
  5. Step 5: Solve for x
    x = 172,217,384.47/13,455.82
  6. Step 6: Final answer
    x = 12,798.73

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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.