Home / 13,309.60-19,964.40-4,543.20

Finding the Fourth Proportional to 13,309.60, 19,964.40 and 4,543.20

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Solution

The fourth proportional to 13,309.60, 19,964.40 and 4,543.20 is: 6,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.60 : 19,964.40 = 4,543.20 : x
  2. Step 2: Convert to fraction form
    13,309.60/19,964.40 = 4,543.20/x
  3. Step 3: Cross multiply
    13,309.60x = 19,964.40 × 4,543.20
  4. Step 4: Simplify right side
    13,309.60x = 90,702,262.08
  5. Step 5: Solve for x
    x = 90,702,262.08/13,309.60
  6. Step 6: Final answer
    x = 6,814.80

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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.