Home / 12,983.08-17,915.64-7,945.21

Finding the Fourth Proportional to 12,983.08, 17,915.64 and 7,945.21

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Solution

The fourth proportional to 12,983.08, 17,915.64 and 7,945.21 is: 10,963.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983.08 : 17,915.64 = 7,945.21 : x
  2. Step 2: Convert to fraction form
    12,983.08/17,915.64 = 7,945.21/x
  3. Step 3: Cross multiply
    12,983.08x = 17,915.64 × 7,945.21
  4. Step 4: Simplify right side
    12,983.08x = 142,343,522.08
  5. Step 5: Solve for x
    x = 142,343,522.08/12,983.08
  6. Step 6: Final answer
    x = 10,963.77

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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.