Home / 12,687.08-17,506.94-7,021.67

Finding the Fourth Proportional to 12,687.08, 17,506.94 and 7,021.67

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Solution

The fourth proportional to 12,687.08, 17,506.94 and 7,021.67 is: 9,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.08 : 17,506.94 = 7,021.67 : x
  2. Step 2: Convert to fraction form
    12,687.08/17,506.94 = 7,021.67/x
  3. Step 3: Cross multiply
    12,687.08x = 17,506.94 × 7,021.67
  4. Step 4: Simplify right side
    12,687.08x = 122,927,832.75
  5. Step 5: Solve for x
    x = 122,927,832.75/12,687.08
  6. Step 6: Final answer
    x = 9,689.22

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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.