Home / 11,101.50-16,655.58-6,420.42

Finding the Fourth Proportional to 11,101.50, 16,655.58 and 6,420.42

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Solution

The fourth proportional to 11,101.50, 16,655.58 and 6,420.42 is: 9,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.50 : 16,655.58 = 6,420.42 : x
  2. Step 2: Convert to fraction form
    11,101.50/16,655.58 = 6,420.42/x
  3. Step 3: Cross multiply
    11,101.50x = 16,655.58 × 6,420.42
  4. Step 4: Simplify right side
    11,101.50x = 106,935,818.94
  5. Step 5: Solve for x
    x = 106,935,818.94/11,101.50
  6. Step 6: Final answer
    x = 9,632.56

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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.