Home / 10,354.38-14,289.06-5,638.68

Finding the Fourth Proportional to 10,354.38, 14,289.06 and 5,638.68

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Solution

The fourth proportional to 10,354.38, 14,289.06 and 5,638.68 is: 7,781.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,354.38 : 14,289.06 = 5,638.68 : x
  2. Step 2: Convert to fraction form
    10,354.38/14,289.06 = 5,638.68/x
  3. Step 3: Cross multiply
    10,354.38x = 14,289.06 × 5,638.68
  4. Step 4: Simplify right side
    10,354.38x = 80,571,436.84
  5. Step 5: Solve for x
    x = 80,571,436.84/10,354.38
  6. Step 6: Final answer
    x = 7,781.39

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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.