Home / 12,915.36-19,341.88-7,351.83

Finding the Fourth Proportional to 12,915.36, 19,341.88 and 7,351.83

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Solution

The fourth proportional to 12,915.36, 19,341.88 and 7,351.83 is: 11,010.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.36 : 19,341.88 = 7,351.83 : x
  2. Step 2: Convert to fraction form
    12,915.36/19,341.88 = 7,351.83/x
  3. Step 3: Cross multiply
    12,915.36x = 19,341.88 × 7,351.83
  4. Step 4: Simplify right side
    12,915.36x = 142,198,195.26
  5. Step 5: Solve for x
    x = 142,198,195.26/12,915.36
  6. Step 6: Final answer
    x = 11,010.01

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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.