Home / 21,325.74-29,459.28-20,204.70

Finding the Fourth Proportional to 21,325.74, 29,459.28 and 20,204.70

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Solution

The fourth proportional to 21,325.74, 29,459.28 and 20,204.70 is: 27,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.74 : 29,459.28 = 20,204.70 : x
  2. Step 2: Convert to fraction form
    21,325.74/29,459.28 = 20,204.70/x
  3. Step 3: Cross multiply
    21,325.74x = 29,459.28 × 20,204.70
  4. Step 4: Simplify right side
    21,325.74x = 595,215,914.62
  5. Step 5: Solve for x
    x = 595,215,914.62/21,325.74
  6. Step 6: Final answer
    x = 27,910.68

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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.