Home / 20,304.32-30,456.64-7,153.68

Finding the Fourth Proportional to 20,304.32, 30,456.64 and 7,153.68

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Solution

The fourth proportional to 20,304.32, 30,456.64 and 7,153.68 is: 10,730.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.32 : 30,456.64 = 7,153.68 : x
  2. Step 2: Convert to fraction form
    20,304.32/30,456.64 = 7,153.68/x
  3. Step 3: Cross multiply
    20,304.32x = 30,456.64 × 7,153.68
  4. Step 4: Simplify right side
    20,304.32x = 217,877,056.44
  5. Step 5: Solve for x
    x = 217,877,056.44/20,304.32
  6. Step 6: Final answer
    x = 10,730.58

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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.