Home / 13,299.05-18,347.53-7,631.75

Finding the Fourth Proportional to 13,299.05, 18,347.53 and 7,631.75

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Solution

The fourth proportional to 13,299.05, 18,347.53 and 7,631.75 is: 10,528.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.05 : 18,347.53 = 7,631.75 : x
  2. Step 2: Convert to fraction form
    13,299.05/18,347.53 = 7,631.75/x
  3. Step 3: Cross multiply
    13,299.05x = 18,347.53 × 7,631.75
  4. Step 4: Simplify right side
    13,299.05x = 140,023,670.34
  5. Step 5: Solve for x
    x = 140,023,670.34/13,299.05
  6. Step 6: Final answer
    x = 10,528.85

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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.