Home / 13,491.63-18,618.45-7,902.63

Finding the Fourth Proportional to 13,491.63, 18,618.45 and 7,902.63

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Solution

The fourth proportional to 13,491.63, 18,618.45 and 7,902.63 is: 10,905.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.63 : 18,618.45 = 7,902.63 : x
  2. Step 2: Convert to fraction form
    13,491.63/18,618.45 = 7,902.63/x
  3. Step 3: Cross multiply
    13,491.63x = 18,618.45 × 7,902.63
  4. Step 4: Simplify right side
    13,491.63x = 147,134,588.92
  5. Step 5: Solve for x
    x = 147,134,588.92/13,491.63
  6. Step 6: Final answer
    x = 10,905.62

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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.