Home / 21,314.30-31,942.26-13,528.58

Finding the Fourth Proportional to 21,314.30, 31,942.26 and 13,528.58

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Solution

The fourth proportional to 21,314.30, 31,942.26 and 13,528.58 is: 20,274.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.30 : 31,942.26 = 13,528.58 : x
  2. Step 2: Convert to fraction form
    21,314.30/31,942.26 = 13,528.58/x
  3. Step 3: Cross multiply
    21,314.30x = 31,942.26 × 13,528.58
  4. Step 4: Simplify right side
    21,314.30x = 432,133,419.79
  5. Step 5: Solve for x
    x = 432,133,419.79/21,314.30
  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.