Home / 13,200.72-18,239.79-12,727.77

Finding the Fourth Proportional to 13,200.72, 18,239.79 and 12,727.77

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Solution

The fourth proportional to 13,200.72, 18,239.79 and 12,727.77 is: 17,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.72 : 18,239.79 = 12,727.77 : x
  2. Step 2: Convert to fraction form
    13,200.72/18,239.79 = 12,727.77/x
  3. Step 3: Cross multiply
    13,200.72x = 18,239.79 × 12,727.77
  4. Step 4: Simplify right side
    13,200.72x = 232,151,851.97
  5. Step 5: Solve for x
    x = 232,151,851.97/13,200.72
  6. Step 6: Final answer
    x = 17,586.30

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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.