Home / 21,346.24-29,455.09-11,915.20

Finding the Fourth Proportional to 21,346.24, 29,455.09 and 11,915.20

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Solution

The fourth proportional to 21,346.24, 29,455.09 and 11,915.20 is: 16,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.24 : 29,455.09 = 11,915.20 : x
  2. Step 2: Convert to fraction form
    21,346.24/29,455.09 = 11,915.20/x
  3. Step 3: Cross multiply
    21,346.24x = 29,455.09 × 11,915.20
  4. Step 4: Simplify right side
    21,346.24x = 350,963,288.37
  5. Step 5: Solve for x
    x = 350,963,288.37/21,346.24
  6. Step 6: Final answer
    x = 16,441.46

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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.