Home / 14,431.80-21,647.70-9,766.20

Finding the Fourth Proportional to 14,431.80, 21,647.70 and 9,766.20

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Solution

The fourth proportional to 14,431.80, 21,647.70 and 9,766.20 is: 14,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.80 : 21,647.70 = 9,766.20 : x
  2. Step 2: Convert to fraction form
    14,431.80/21,647.70 = 9,766.20/x
  3. Step 3: Cross multiply
    14,431.80x = 21,647.70 × 9,766.20
  4. Step 4: Simplify right side
    14,431.80x = 211,415,767.74
  5. Step 5: Solve for x
    x = 211,415,767.74/14,431.80
  6. Step 6: Final answer
    x = 14,649.30

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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.