Home / 12,720.48-17,559.76-11,923.44

Finding the Fourth Proportional to 12,720.48, 17,559.76 and 11,923.44

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Solution

The fourth proportional to 12,720.48, 17,559.76 and 11,923.44 is: 16,459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.48 : 17,559.76 = 11,923.44 : x
  2. Step 2: Convert to fraction form
    12,720.48/17,559.76 = 11,923.44/x
  3. Step 3: Cross multiply
    12,720.48x = 17,559.76 × 11,923.44
  4. Step 4: Simplify right side
    12,720.48x = 209,372,744.77
  5. Step 5: Solve for x
    x = 209,372,744.77/12,720.48
  6. Step 6: Final answer
    x = 16,459.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.