Home / 13,816.40-20,724.60-4,581.20

Finding the Fourth Proportional to 13,816.40, 20,724.60 and 4,581.20

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Solution

The fourth proportional to 13,816.40, 20,724.60 and 4,581.20 is: 6,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.40 : 20,724.60 = 4,581.20 : x
  2. Step 2: Convert to fraction form
    13,816.40/20,724.60 = 4,581.20/x
  3. Step 3: Cross multiply
    13,816.40x = 20,724.60 × 4,581.20
  4. Step 4: Simplify right side
    13,816.40x = 94,943,537.52
  5. Step 5: Solve for x
    x = 94,943,537.52/13,816.40
  6. Step 6: Final answer
    x = 6,871.80

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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.