Home / 13,705.89-20,531.43-6,300.20

Finding the Fourth Proportional to 13,705.89, 20,531.43 and 6,300.20

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Solution

The fourth proportional to 13,705.89, 20,531.43 and 6,300.20 is: 9,437.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.89 : 20,531.43 = 6,300.20 : x
  2. Step 2: Convert to fraction form
    13,705.89/20,531.43 = 6,300.20/x
  3. Step 3: Cross multiply
    13,705.89x = 20,531.43 × 6,300.20
  4. Step 4: Simplify right side
    13,705.89x = 129,352,012.63
  5. Step 5: Solve for x
    x = 129,352,012.63/13,705.89
  6. Step 6: Final answer
    x = 9,437.70

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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.