Home / 28,107.21-38,790.41-15,534.39

Finding the Fourth Proportional to 28,107.21, 38,790.41 and 15,534.39

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Solution

The fourth proportional to 28,107.21, 38,790.41 and 15,534.39 is: 21,438.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.21 : 38,790.41 = 15,534.39 : x
  2. Step 2: Convert to fraction form
    28,107.21/38,790.41 = 15,534.39/x
  3. Step 3: Cross multiply
    28,107.21x = 38,790.41 × 15,534.39
  4. Step 4: Simplify right side
    28,107.21x = 602,585,279.53
  5. Step 5: Solve for x
    x = 602,585,279.53/28,107.21
  6. Step 6: Final answer
    x = 21,438.82

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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.