Home / 20,903.09-31,338.23-14,309.28

Finding the Fourth Proportional to 20,903.09, 31,338.23 and 14,309.28

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Solution

The fourth proportional to 20,903.09, 31,338.23 and 14,309.28 is: 21,452.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.09 : 31,338.23 = 14,309.28 : x
  2. Step 2: Convert to fraction form
    20,903.09/31,338.23 = 14,309.28/x
  3. Step 3: Cross multiply
    20,903.09x = 31,338.23 × 14,309.28
  4. Step 4: Simplify right side
    20,903.09x = 448,427,436.23
  5. Step 5: Solve for x
    x = 448,427,436.23/20,903.09
  6. Step 6: Final answer
    x = 21,452.69

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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.