Home / 15,936-21,970.56-13,928.32

Finding the Fourth Proportional to 15,936, 21,970.56 and 13,928.32

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Solution

The fourth proportional to 15,936, 21,970.56 and 13,928.32 is: 19,202.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936 : 21,970.56 = 13,928.32 : x
  2. Step 2: Convert to fraction form
    15,936/21,970.56 = 13,928.32/x
  3. Step 3: Cross multiply
    15,936x = 21,970.56 × 13,928.32
  4. Step 4: Simplify right side
    15,936x = 306,012,990.26
  5. Step 5: Solve for x
    x = 306,012,990.26/15,936
  6. Step 6: Final answer
    x = 19,202.62

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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.