Home / 13,931.44-20,896.84-3,543.20

Finding the Fourth Proportional to 13,931.44, 20,896.84 and 3,543.20

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Solution

The fourth proportional to 13,931.44, 20,896.84 and 3,543.20 is: 5,314.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.44 : 20,896.84 = 3,543.20 : x
  2. Step 2: Convert to fraction form
    13,931.44/20,896.84 = 3,543.20/x
  3. Step 3: Cross multiply
    13,931.44x = 20,896.84 × 3,543.20
  4. Step 4: Simplify right side
    13,931.44x = 74,041,683.49
  5. Step 5: Solve for x
    x = 74,041,683.49/13,931.44
  6. Step 6: Final answer
    x = 5,314.72

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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.