Home / 28,137.46-38,829.21-15,562.21

Finding the Fourth Proportional to 28,137.46, 38,829.21 and 15,562.21

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Solution

The fourth proportional to 28,137.46, 38,829.21 and 15,562.21 is: 21,475.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.46 : 38,829.21 = 15,562.21 : x
  2. Step 2: Convert to fraction form
    28,137.46/38,829.21 = 15,562.21/x
  3. Step 3: Cross multiply
    28,137.46x = 38,829.21 × 15,562.21
  4. Step 4: Simplify right side
    28,137.46x = 604,268,320.15
  5. Step 5: Solve for x
    x = 604,268,320.15/28,137.46
  6. Step 6: Final answer
    x = 21,475.58

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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.