Home / 20,711.36-28,597.92-16,719.68

Finding the Fourth Proportional to 20,711.36, 28,597.92 and 16,719.68

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Solution

The fourth proportional to 20,711.36, 28,597.92 and 16,719.68 is: 23,086.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.36 : 28,597.92 = 16,719.68 : x
  2. Step 2: Convert to fraction form
    20,711.36/28,597.92 = 16,719.68/x
  3. Step 3: Cross multiply
    20,711.36x = 28,597.92 × 16,719.68
  4. Step 4: Simplify right side
    20,711.36x = 478,148,071.07
  5. Step 5: Solve for x
    x = 478,148,071.07/20,711.36
  6. Step 6: Final answer
    x = 23,086.27

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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.