Home / 15,340.72-21,167.84-8,625.36

Finding the Fourth Proportional to 15,340.72, 21,167.84 and 8,625.36

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Solution

The fourth proportional to 15,340.72, 21,167.84 and 8,625.36 is: 11,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.72 : 21,167.84 = 8,625.36 : x
  2. Step 2: Convert to fraction form
    15,340.72/21,167.84 = 8,625.36/x
  3. Step 3: Cross multiply
    15,340.72x = 21,167.84 × 8,625.36
  4. Step 4: Simplify right side
    15,340.72x = 182,580,240.42
  5. Step 5: Solve for x
    x = 182,580,240.42/15,340.72
  6. Step 6: Final answer
    x = 11,901.67

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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.