Home / 11,430.20-17,115.93-7,915.20

Finding the Fourth Proportional to 11,430.20, 17,115.93 and 7,915.20

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Solution

The fourth proportional to 11,430.20, 17,115.93 and 7,915.20 is: 11,852.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.20 : 17,115.93 = 7,915.20 : x
  2. Step 2: Convert to fraction form
    11,430.20/17,115.93 = 7,915.20/x
  3. Step 3: Cross multiply
    11,430.20x = 17,115.93 × 7,915.20
  4. Step 4: Simplify right side
    11,430.20x = 135,476,009.14
  5. Step 5: Solve for x
    x = 135,476,009.14/11,430.20
  6. Step 6: Final answer
    x = 11,852.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.