Home / 13,212.76-18,233.10-7,904.80

Finding the Fourth Proportional to 13,212.76, 18,233.10 and 7,904.80

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Solution

The fourth proportional to 13,212.76, 18,233.10 and 7,904.80 is: 10,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.76 : 18,233.10 = 7,904.80 : x
  2. Step 2: Convert to fraction form
    13,212.76/18,233.10 = 7,904.80/x
  3. Step 3: Cross multiply
    13,212.76x = 18,233.10 × 7,904.80
  4. Step 4: Simplify right side
    13,212.76x = 144,129,008.88
  5. Step 5: Solve for x
    x = 144,129,008.88/13,212.76
  6. Step 6: Final answer
    x = 10,908.32

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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.