Home / 20,802.17-31,203.25-18,997.89

Finding the Fourth Proportional to 20,802.17, 31,203.25 and 18,997.89

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Solution

The fourth proportional to 20,802.17, 31,203.25 and 18,997.89 is: 28,496.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.17 : 31,203.25 = 18,997.89 : x
  2. Step 2: Convert to fraction form
    20,802.17/31,203.25 = 18,997.89/x
  3. Step 3: Cross multiply
    20,802.17x = 31,203.25 × 18,997.89
  4. Step 4: Simplify right side
    20,802.17x = 592,795,975.59
  5. Step 5: Solve for x
    x = 592,795,975.59/20,802.17
  6. Step 6: Final answer
    x = 28,496.84

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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.