Home / 30,580.17-45,885.90-13,938.06

Finding the Fourth Proportional to 30,580.17, 45,885.90 and 13,938.06

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Solution

The fourth proportional to 30,580.17, 45,885.90 and 13,938.06 is: 20,914.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,580.17 : 45,885.90 = 13,938.06 : x
  2. Step 2: Convert to fraction form
    30,580.17/45,885.90 = 13,938.06/x
  3. Step 3: Cross multiply
    30,580.17x = 45,885.90 × 13,938.06
  4. Step 4: Simplify right side
    30,580.17x = 639,560,427.35
  5. Step 5: Solve for x
    x = 639,560,427.35/30,580.17
  6. Step 6: Final answer
    x = 20,914.22

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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.