Home / 14,814.48-20,435.10-9,778.80

Finding the Fourth Proportional to 14,814.48, 20,435.10 and 9,778.80

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Solution

The fourth proportional to 14,814.48, 20,435.10 and 9,778.80 is: 13,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,814.48 : 20,435.10 = 9,778.80 : x
  2. Step 2: Convert to fraction form
    14,814.48/20,435.10 = 9,778.80/x
  3. Step 3: Cross multiply
    14,814.48x = 20,435.10 × 9,778.80
  4. Step 4: Simplify right side
    14,814.48x = 199,830,755.88
  5. Step 5: Solve for x
    x = 199,830,755.88/14,814.48
  6. Step 6: Final answer
    x = 13,488.88

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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.