Home / 13,123.80-19,685.70-4,359.60

Finding the Fourth Proportional to 13,123.80, 19,685.70 and 4,359.60

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Solution

The fourth proportional to 13,123.80, 19,685.70 and 4,359.60 is: 6,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.80 : 19,685.70 = 4,359.60 : x
  2. Step 2: Convert to fraction form
    13,123.80/19,685.70 = 4,359.60/x
  3. Step 3: Cross multiply
    13,123.80x = 19,685.70 × 4,359.60
  4. Step 4: Simplify right side
    13,123.80x = 85,821,777.72
  5. Step 5: Solve for x
    x = 85,821,777.72/13,123.80
  6. Step 6: Final answer
    x = 6,539.40

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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.