Home / 20,237.04-30,347.88-11,478

Finding the Fourth Proportional to 20,237.04, 30,347.88 and 11,478

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Solution

The fourth proportional to 20,237.04, 30,347.88 and 11,478 is: 17,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.04 : 30,347.88 = 11,478 : x
  2. Step 2: Convert to fraction form
    20,237.04/30,347.88 = 11,478/x
  3. Step 3: Cross multiply
    20,237.04x = 30,347.88 × 11,478
  4. Step 4: Simplify right side
    20,237.04x = 348,332,966.64
  5. Step 5: Solve for x
    x = 348,332,966.64/20,237.04
  6. Step 6: Final answer
    x = 17,212.64

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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.