Home / 13,583.81-20,373.53-3,720.78

Finding the Fourth Proportional to 13,583.81, 20,373.53 and 3,720.78

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Solution

The fourth proportional to 13,583.81, 20,373.53 and 3,720.78 is: 5,580.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.81 : 20,373.53 = 3,720.78 : x
  2. Step 2: Convert to fraction form
    13,583.81/20,373.53 = 3,720.78/x
  3. Step 3: Cross multiply
    13,583.81x = 20,373.53 × 3,720.78
  4. Step 4: Simplify right side
    13,583.81x = 75,805,472.11
  5. Step 5: Solve for x
    x = 75,805,472.11/13,583.81
  6. Step 6: Final answer
    x = 5,580.58

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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.