Home / 22,188.90-30,620.28-12,117.07

Finding the Fourth Proportional to 22,188.90, 30,620.28 and 12,117.07

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Solution

The fourth proportional to 22,188.90, 30,620.28 and 12,117.07 is: 16,721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.90 : 30,620.28 = 12,117.07 : x
  2. Step 2: Convert to fraction form
    22,188.90/30,620.28 = 12,117.07/x
  3. Step 3: Cross multiply
    22,188.90x = 30,620.28 × 12,117.07
  4. Step 4: Simplify right side
    22,188.90x = 371,028,076.18
  5. Step 5: Solve for x
    x = 371,028,076.18/22,188.90
  6. Step 6: Final answer
    x = 16,721.34

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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.