Home / 13,349.70-18,421.98-7,299.78

Finding the Fourth Proportional to 13,349.70, 18,421.98 and 7,299.78

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Solution

The fourth proportional to 13,349.70, 18,421.98 and 7,299.78 is: 10,073.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.70 : 18,421.98 = 7,299.78 : x
  2. Step 2: Convert to fraction form
    13,349.70/18,421.98 = 7,299.78/x
  3. Step 3: Cross multiply
    13,349.70x = 18,421.98 × 7,299.78
  4. Step 4: Simplify right side
    13,349.70x = 134,476,358.72
  5. Step 5: Solve for x
    x = 134,476,358.72/13,349.70
  6. Step 6: Final answer
    x = 10,073.36

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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.