Home / 13,491.05-20,242.40-7,243.76

Finding the Fourth Proportional to 13,491.05, 20,242.40 and 7,243.76

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Solution

The fourth proportional to 13,491.05, 20,242.40 and 7,243.76 is: 10,868.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.05 : 20,242.40 = 7,243.76 : x
  2. Step 2: Convert to fraction form
    13,491.05/20,242.40 = 7,243.76/x
  3. Step 3: Cross multiply
    13,491.05x = 20,242.40 × 7,243.76
  4. Step 4: Simplify right side
    13,491.05x = 146,631,101.81
  5. Step 5: Solve for x
    x = 146,631,101.81/13,491.05
  6. Step 6: Final answer
    x = 10,868.77

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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.