Home / 21,998.04-30,374.78-20,318.84

Finding the Fourth Proportional to 21,998.04, 30,374.78 and 20,318.84

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Solution

The fourth proportional to 21,998.04, 30,374.78 and 20,318.84 is: 28,056.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.04 : 30,374.78 = 20,318.84 : x
  2. Step 2: Convert to fraction form
    21,998.04/30,374.78 = 20,318.84/x
  3. Step 3: Cross multiply
    21,998.04x = 30,374.78 × 20,318.84
  4. Step 4: Simplify right side
    21,998.04x = 617,180,294.86
  5. Step 5: Solve for x
    x = 617,180,294.86/21,998.04
  6. Step 6: Final answer
    x = 28,056.15

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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.