Home / 13,337.60-20,006.40-12,768.80

Finding the Fourth Proportional to 13,337.60, 20,006.40 and 12,768.80

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Solution

The fourth proportional to 13,337.60, 20,006.40 and 12,768.80 is: 19,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,337.60 : 20,006.40 = 12,768.80 : x
  2. Step 2: Convert to fraction form
    13,337.60/20,006.40 = 12,768.80/x
  3. Step 3: Cross multiply
    13,337.60x = 20,006.40 × 12,768.80
  4. Step 4: Simplify right side
    13,337.60x = 255,457,720.32
  5. Step 5: Solve for x
    x = 255,457,720.32/13,337.60
  6. Step 6: Final answer
    x = 19,153.20

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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.