Home / 13,783.28-20,681.74-5,463.11

Finding the Fourth Proportional to 13,783.28, 20,681.74 and 5,463.11

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Solution

The fourth proportional to 13,783.28, 20,681.74 and 5,463.11 is: 8,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.28 : 20,681.74 = 5,463.11 : x
  2. Step 2: Convert to fraction form
    13,783.28/20,681.74 = 5,463.11/x
  3. Step 3: Cross multiply
    13,783.28x = 20,681.74 × 5,463.11
  4. Step 4: Simplify right side
    13,783.28x = 112,986,503.54
  5. Step 5: Solve for x
    x = 112,986,503.54/13,783.28
  6. Step 6: Final answer
    x = 8,197.36

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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.