Home / 13,156.40-19,721.30-5,664.85

Finding the Fourth Proportional to 13,156.40, 19,721.30 and 5,664.85

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Solution

The fourth proportional to 13,156.40, 19,721.30 and 5,664.85 is: 8,491.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.40 : 19,721.30 = 5,664.85 : x
  2. Step 2: Convert to fraction form
    13,156.40/19,721.30 = 5,664.85/x
  3. Step 3: Cross multiply
    13,156.40x = 19,721.30 × 5,664.85
  4. Step 4: Simplify right side
    13,156.40x = 111,718,139.50
  5. Step 5: Solve for x
    x = 111,718,139.50/13,156.40
  6. Step 6: Final answer
    x = 8,491.54

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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.