Home / 20,582.43-30,840.84-13,180.80

Finding the Fourth Proportional to 20,582.43, 30,840.84 and 13,180.80

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Solution

The fourth proportional to 20,582.43, 30,840.84 and 13,180.80 is: 19,750.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.43 : 30,840.84 = 13,180.80 : x
  2. Step 2: Convert to fraction form
    20,582.43/30,840.84 = 13,180.80/x
  3. Step 3: Cross multiply
    20,582.43x = 30,840.84 × 13,180.80
  4. Step 4: Simplify right side
    20,582.43x = 406,506,943.87
  5. Step 5: Solve for x
    x = 406,506,943.87/20,582.43
  6. Step 6: Final answer
    x = 19,750.19

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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.