Home / 12,013.21-16,581.19-7,769.01

Finding the Fourth Proportional to 12,013.21, 16,581.19 and 7,769.01

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Solution

The fourth proportional to 12,013.21, 16,581.19 and 7,769.01 is: 10,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.21 : 16,581.19 = 7,769.01 : x
  2. Step 2: Convert to fraction form
    12,013.21/16,581.19 = 7,769.01/x
  3. Step 3: Cross multiply
    12,013.21x = 16,581.19 × 7,769.01
  4. Step 4: Simplify right side
    12,013.21x = 128,819,430.92
  5. Step 5: Solve for x
    x = 128,819,430.92/12,013.21
  6. Step 6: Final answer
    x = 10,723.15

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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.