Home / 13,029.80-19,562.70-8,378.60

Finding the Fourth Proportional to 13,029.80, 19,562.70 and 8,378.60

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Solution

The fourth proportional to 13,029.80, 19,562.70 and 8,378.60 is: 12,579.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,029.80 : 19,562.70 = 8,378.60 : x
  2. Step 2: Convert to fraction form
    13,029.80/19,562.70 = 8,378.60/x
  3. Step 3: Cross multiply
    13,029.80x = 19,562.70 × 8,378.60
  4. Step 4: Simplify right side
    13,029.80x = 163,908,038.22
  5. Step 5: Solve for x
    x = 163,908,038.22/13,029.80
  6. Step 6: Final answer
    x = 12,579.47

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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.