Home / 30,582.59-45,871.65-13,720.82

Finding the Fourth Proportional to 30,582.59, 45,871.65 and 13,720.82

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Solution

The fourth proportional to 30,582.59, 45,871.65 and 13,720.82 is: 20,580.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,582.59 : 45,871.65 = 13,720.82 : x
  2. Step 2: Convert to fraction form
    30,582.59/45,871.65 = 13,720.82/x
  3. Step 3: Cross multiply
    30,582.59x = 45,871.65 × 13,720.82
  4. Step 4: Simplify right side
    30,582.59x = 629,396,423.39
  5. Step 5: Solve for x
    x = 629,396,423.39/30,582.59
  6. Step 6: Final answer
    x = 20,580.22

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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.