Home / 28,429.34-39,230.84-15,682.70

Finding the Fourth Proportional to 28,429.34, 39,230.84 and 15,682.70

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Solution

The fourth proportional to 28,429.34, 39,230.84 and 15,682.70 is: 21,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.34 : 39,230.84 = 15,682.70 : x
  2. Step 2: Convert to fraction form
    28,429.34/39,230.84 = 15,682.70/x
  3. Step 3: Cross multiply
    28,429.34x = 39,230.84 × 15,682.70
  4. Step 4: Simplify right side
    28,429.34x = 615,245,219.90
  5. Step 5: Solve for x
    x = 615,245,219.90/28,429.34
  6. Step 6: Final answer
    x = 21,641.21

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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.