Home / 20,122.43-27,774.36-12,564.18

Finding the Fourth Proportional to 20,122.43, 27,774.36 and 12,564.18

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Solution

The fourth proportional to 20,122.43, 27,774.36 and 12,564.18 is: 17,341.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.43 : 27,774.36 = 12,564.18 : x
  2. Step 2: Convert to fraction form
    20,122.43/27,774.36 = 12,564.18/x
  3. Step 3: Cross multiply
    20,122.43x = 27,774.36 × 12,564.18
  4. Step 4: Simplify right side
    20,122.43x = 348,962,058.42
  5. Step 5: Solve for x
    x = 348,962,058.42/20,122.43
  6. Step 6: Final answer
    x = 17,341.95

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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.