Home / 11,430.62-15,772.68-6,394.58

Finding the Fourth Proportional to 11,430.62, 15,772.68 and 6,394.58

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Solution

The fourth proportional to 11,430.62, 15,772.68 and 6,394.58 is: 8,823.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.62 : 15,772.68 = 6,394.58 : x
  2. Step 2: Convert to fraction form
    11,430.62/15,772.68 = 6,394.58/x
  3. Step 3: Cross multiply
    11,430.62x = 15,772.68 × 6,394.58
  4. Step 4: Simplify right side
    11,430.62x = 100,859,664.07
  5. Step 5: Solve for x
    x = 100,859,664.07/11,430.62
  6. Step 6: Final answer
    x = 8,823.64

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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.