Home / 20,292.32-30,445.31-12,787.16

Finding the Fourth Proportional to 20,292.32, 30,445.31 and 12,787.16

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Solution

The fourth proportional to 20,292.32, 30,445.31 and 12,787.16 is: 19,185.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.32 : 30,445.31 = 12,787.16 : x
  2. Step 2: Convert to fraction form
    20,292.32/30,445.31 = 12,787.16/x
  3. Step 3: Cross multiply
    20,292.32x = 30,445.31 × 12,787.16
  4. Step 4: Simplify right side
    20,292.32x = 389,308,834.06
  5. Step 5: Solve for x
    x = 389,308,834.06/20,292.32
  6. Step 6: Final answer
    x = 19,185.04

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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.