Home / 9,676.47-13,354.65-5,428.70

Finding the Fourth Proportional to 9,676.47, 13,354.65 and 5,428.70

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Solution

The fourth proportional to 9,676.47, 13,354.65 and 5,428.70 is: 7,492.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,676.47 : 13,354.65 = 5,428.70 : x
  2. Step 2: Convert to fraction form
    9,676.47/13,354.65 = 5,428.70/x
  3. Step 3: Cross multiply
    9,676.47x = 13,354.65 × 5,428.70
  4. Step 4: Simplify right side
    9,676.47x = 72,498,321.68
  5. Step 5: Solve for x
    x = 72,498,321.68/9,676.47
  6. Step 6: Final answer
    x = 7,492.23

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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.