Home / 15,459.12-21,333.72-8,744.80

Finding the Fourth Proportional to 15,459.12, 21,333.72 and 8,744.80

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Solution

The fourth proportional to 15,459.12, 21,333.72 and 8,744.80 is: 12,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.12 : 21,333.72 = 8,744.80 : x
  2. Step 2: Convert to fraction form
    15,459.12/21,333.72 = 8,744.80/x
  3. Step 3: Cross multiply
    15,459.12x = 21,333.72 × 8,744.80
  4. Step 4: Simplify right side
    15,459.12x = 186,559,114.66
  5. Step 5: Solve for x
    x = 186,559,114.66/15,459.12
  6. Step 6: Final answer
    x = 12,067.90

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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.