Home / 13,737.60-20,606.40-8,812.80

Finding the Fourth Proportional to 13,737.60, 20,606.40 and 8,812.80

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Solution

The fourth proportional to 13,737.60, 20,606.40 and 8,812.80 is: 13,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,737.60 : 20,606.40 = 8,812.80 : x
  2. Step 2: Convert to fraction form
    13,737.60/20,606.40 = 8,812.80/x
  3. Step 3: Cross multiply
    13,737.60x = 20,606.40 × 8,812.80
  4. Step 4: Simplify right side
    13,737.60x = 181,600,081.92
  5. Step 5: Solve for x
    x = 181,600,081.92/13,737.60
  6. Step 6: Final answer
    x = 13,219.20

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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.