Home / 14,778.05-20,395.67-8,490.42

Finding the Fourth Proportional to 14,778.05, 20,395.67 and 8,490.42

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Solution

The fourth proportional to 14,778.05, 20,395.67 and 8,490.42 is: 11,717.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.05 : 20,395.67 = 8,490.42 : x
  2. Step 2: Convert to fraction form
    14,778.05/20,395.67 = 8,490.42/x
  3. Step 3: Cross multiply
    14,778.05x = 20,395.67 × 8,490.42
  4. Step 4: Simplify right side
    14,778.05x = 173,167,762.03
  5. Step 5: Solve for x
    x = 173,167,762.03/14,778.05
  6. Step 6: Final answer
    x = 11,717.91

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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.