Home / 15,809.28-21,792.40-11,824.32

Finding the Fourth Proportional to 15,809.28, 21,792.40 and 11,824.32

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Solution

The fourth proportional to 15,809.28, 21,792.40 and 11,824.32 is: 16,299.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.28 : 21,792.40 = 11,824.32 : x
  2. Step 2: Convert to fraction form
    15,809.28/21,792.40 = 11,824.32/x
  3. Step 3: Cross multiply
    15,809.28x = 21,792.40 × 11,824.32
  4. Step 4: Simplify right side
    15,809.28x = 257,680,311.17
  5. Step 5: Solve for x
    x = 257,680,311.17/15,809.28
  6. Step 6: Final answer
    x = 16,299.31

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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.