Home / 20,582.47-28,402.07-12,083.68

Finding the Fourth Proportional to 20,582.47, 28,402.07 and 12,083.68

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Solution

The fourth proportional to 20,582.47, 28,402.07 and 12,083.68 is: 16,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.47 : 28,402.07 = 12,083.68 : x
  2. Step 2: Convert to fraction form
    20,582.47/28,402.07 = 12,083.68/x
  3. Step 3: Cross multiply
    20,582.47x = 28,402.07 × 12,083.68
  4. Step 4: Simplify right side
    20,582.47x = 343,201,464.80
  5. Step 5: Solve for x
    x = 343,201,464.80/20,582.47
  6. Step 6: Final answer
    x = 16,674.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.