Home / 13,348.71-18,421.34-7,299.12

Finding the Fourth Proportional to 13,348.71, 18,421.34 and 7,299.12

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Solution

The fourth proportional to 13,348.71, 18,421.34 and 7,299.12 is: 10,072.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.71 : 18,421.34 = 7,299.12 : x
  2. Step 2: Convert to fraction form
    13,348.71/18,421.34 = 7,299.12/x
  3. Step 3: Cross multiply
    13,348.71x = 18,421.34 × 7,299.12
  4. Step 4: Simplify right side
    13,348.71x = 134,459,644.86
  5. Step 5: Solve for x
    x = 134,459,644.86/13,348.71
  6. Step 6: Final answer
    x = 10,072.86

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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.