Home / 14,972.40-20,661.75-8,257.86

Finding the Fourth Proportional to 14,972.40, 20,661.75 and 8,257.86

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Solution

The fourth proportional to 14,972.40, 20,661.75 and 8,257.86 is: 11,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,972.40 : 20,661.75 = 8,257.86 : x
  2. Step 2: Convert to fraction form
    14,972.40/20,661.75 = 8,257.86/x
  3. Step 3: Cross multiply
    14,972.40x = 20,661.75 × 8,257.86
  4. Step 4: Simplify right side
    14,972.40x = 170,621,838.86
  5. Step 5: Solve for x
    x = 170,621,838.86/14,972.40
  6. Step 6: Final answer
    x = 11,395.76

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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.