Home / 13,720.48-20,583.58-7,800.09

Finding the Fourth Proportional to 13,720.48, 20,583.58 and 7,800.09

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Solution

The fourth proportional to 13,720.48, 20,583.58 and 7,800.09 is: 11,701.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.48 : 20,583.58 = 7,800.09 : x
  2. Step 2: Convert to fraction form
    13,720.48/20,583.58 = 7,800.09/x
  3. Step 3: Cross multiply
    13,720.48x = 20,583.58 × 7,800.09
  4. Step 4: Simplify right side
    13,720.48x = 160,553,776.52
  5. Step 5: Solve for x
    x = 160,553,776.52/13,720.48
  6. Step 6: Final answer
    x = 11,701.76

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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.