Home / 13,208.80-19,784.40-8,543.20

Finding the Fourth Proportional to 13,208.80, 19,784.40 and 8,543.20

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Solution

The fourth proportional to 13,208.80, 19,784.40 and 8,543.20 is: 12,796.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.80 : 19,784.40 = 8,543.20 : x
  2. Step 2: Convert to fraction form
    13,208.80/19,784.40 = 8,543.20/x
  3. Step 3: Cross multiply
    13,208.80x = 19,784.40 × 8,543.20
  4. Step 4: Simplify right side
    13,208.80x = 169,022,086.08
  5. Step 5: Solve for x
    x = 169,022,086.08/13,208.80
  6. Step 6: Final answer
    x = 12,796.17

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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.