Home / 21,314.32-31,942.24-13,528.60

Finding the Fourth Proportional to 21,314.32, 31,942.24 and 13,528.60

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Solution

The fourth proportional to 21,314.32, 31,942.24 and 13,528.60 is: 20,274.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.32 : 31,942.24 = 13,528.60 : x
  2. Step 2: Convert to fraction form
    21,314.32/31,942.24 = 13,528.60/x
  3. Step 3: Cross multiply
    21,314.32x = 31,942.24 × 13,528.60
  4. Step 4: Simplify right side
    21,314.32x = 432,133,788.06
  5. Step 5: Solve for x
    x = 432,133,788.06/21,314.32
  6. Step 6: Final answer
    x = 20,274.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.