Home / 12,021.60-16,589.20-6,715.36

Finding the Fourth Proportional to 12,021.60, 16,589.20 and 6,715.36

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Solution

The fourth proportional to 12,021.60, 16,589.20 and 6,715.36 is: 9,266.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.60 : 16,589.20 = 6,715.36 : x
  2. Step 2: Convert to fraction form
    12,021.60/16,589.20 = 6,715.36/x
  3. Step 3: Cross multiply
    12,021.60x = 16,589.20 × 6,715.36
  4. Step 4: Simplify right side
    12,021.60x = 111,402,450.11
  5. Step 5: Solve for x
    x = 111,402,450.11/12,021.60
  6. Step 6: Final answer
    x = 9,266.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.