Home / 20,991.26-31,444.71-10,429.35

Finding the Fourth Proportional to 20,991.26, 31,444.71 and 10,429.35

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Solution

The fourth proportional to 20,991.26, 31,444.71 and 10,429.35 is: 15,623.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,991.26 : 31,444.71 = 10,429.35 : x
  2. Step 2: Convert to fraction form
    20,991.26/31,444.71 = 10,429.35/x
  3. Step 3: Cross multiply
    20,991.26x = 31,444.71 × 10,429.35
  4. Step 4: Simplify right side
    20,991.26x = 327,947,886.24
  5. Step 5: Solve for x
    x = 327,947,886.24/20,991.26
  6. Step 6: Final answer
    x = 15,623.07

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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.