Home / 10,391.72-14,340.48-5,915.48

Finding the Fourth Proportional to 10,391.72, 14,340.48 and 5,915.48

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Solution

The fourth proportional to 10,391.72, 14,340.48 and 5,915.48 is: 8,163.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.72 : 14,340.48 = 5,915.48 : x
  2. Step 2: Convert to fraction form
    10,391.72/14,340.48 = 5,915.48/x
  3. Step 3: Cross multiply
    10,391.72x = 14,340.48 × 5,915.48
  4. Step 4: Simplify right side
    10,391.72x = 84,830,822.63
  5. Step 5: Solve for x
    x = 84,830,822.63/10,391.72
  6. Step 6: Final answer
    x = 8,163.31

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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.