Home / 13,619.34-20,463.37-13,065.78

Finding the Fourth Proportional to 13,619.34, 20,463.37 and 13,065.78

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Solution

The fourth proportional to 13,619.34, 20,463.37 and 13,065.78 is: 19,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.34 : 20,463.37 = 13,065.78 : x
  2. Step 2: Convert to fraction form
    13,619.34/20,463.37 = 13,065.78/x
  3. Step 3: Cross multiply
    13,619.34x = 20,463.37 × 13,065.78
  4. Step 4: Simplify right side
    13,619.34x = 267,369,857.81
  5. Step 5: Solve for x
    x = 267,369,857.81/13,619.34
  6. Step 6: Final answer
    x = 19,631.63

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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.