Home / 13,905.80-20,810.10-9,726.20

Finding the Fourth Proportional to 13,905.80, 20,810.10 and 9,726.20

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Solution

The fourth proportional to 13,905.80, 20,810.10 and 9,726.20 is: 14,555.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.80 : 20,810.10 = 9,726.20 : x
  2. Step 2: Convert to fraction form
    13,905.80/20,810.10 = 9,726.20/x
  3. Step 3: Cross multiply
    13,905.80x = 20,810.10 × 9,726.20
  4. Step 4: Simplify right side
    13,905.80x = 202,403,194.62
  5. Step 5: Solve for x
    x = 202,403,194.62/13,905.80
  6. Step 6: Final answer
    x = 14,555.31

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1.5x scale

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.