Home / 20,582.51-28,386.07-13,409.73

Finding the Fourth Proportional to 20,582.51, 28,386.07 and 13,409.73

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Solution

The fourth proportional to 20,582.51, 28,386.07 and 13,409.73 is: 18,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.51 : 28,386.07 = 13,409.73 : x
  2. Step 2: Convert to fraction form
    20,582.51/28,386.07 = 13,409.73/x
  3. Step 3: Cross multiply
    20,582.51x = 28,386.07 × 13,409.73
  4. Step 4: Simplify right side
    20,582.51x = 380,649,534.46
  5. Step 5: Solve for x
    x = 380,649,534.46/20,582.51
  6. Step 6: Final answer
    x = 18,493.83

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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.