Home / 12,347.12-18,515.70-4,554.20

Finding the Fourth Proportional to 12,347.12, 18,515.70 and 4,554.20

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Solution

The fourth proportional to 12,347.12, 18,515.70 and 4,554.20 is: 6,829.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.12 : 18,515.70 = 4,554.20 : x
  2. Step 2: Convert to fraction form
    12,347.12/18,515.70 = 4,554.20/x
  3. Step 3: Cross multiply
    12,347.12x = 18,515.70 × 4,554.20
  4. Step 4: Simplify right side
    12,347.12x = 84,324,200.94
  5. Step 5: Solve for x
    x = 84,324,200.94/12,347.12
  6. Step 6: Final answer
    x = 6,829.46

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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.