Home / 21,124.32-29,153.04-11,693.28

Finding the Fourth Proportional to 21,124.32, 29,153.04 and 11,693.28

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Solution

The fourth proportional to 21,124.32, 29,153.04 and 11,693.28 is: 16,137.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.32 : 29,153.04 = 11,693.28 : x
  2. Step 2: Convert to fraction form
    21,124.32/29,153.04 = 11,693.28/x
  3. Step 3: Cross multiply
    21,124.32x = 29,153.04 × 11,693.28
  4. Step 4: Simplify right side
    21,124.32x = 340,894,659.57
  5. Step 5: Solve for x
    x = 340,894,659.57/21,124.32
  6. Step 6: Final answer
    x = 16,137.54

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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.