Home / 20,456.04-30,685.80-5,664.96

Finding the Fourth Proportional to 20,456.04, 30,685.80 and 5,664.96

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Solution

The fourth proportional to 20,456.04, 30,685.80 and 5,664.96 is: 8,497.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.04 : 30,685.80 = 5,664.96 : x
  2. Step 2: Convert to fraction form
    20,456.04/30,685.80 = 5,664.96/x
  3. Step 3: Cross multiply
    20,456.04x = 30,685.80 × 5,664.96
  4. Step 4: Simplify right side
    20,456.04x = 173,833,829.57
  5. Step 5: Solve for x
    x = 173,833,829.57/20,456.04
  6. Step 6: Final answer
    x = 8,497.92

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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.