Home / 20,719.21-28,623.75-16,733.40

Finding the Fourth Proportional to 20,719.21, 28,623.75 and 16,733.40

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Solution

The fourth proportional to 20,719.21, 28,623.75 and 16,733.40 is: 23,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.21 : 28,623.75 = 16,733.40 : x
  2. Step 2: Convert to fraction form
    20,719.21/28,623.75 = 16,733.40/x
  3. Step 3: Cross multiply
    20,719.21x = 28,623.75 × 16,733.40
  4. Step 4: Simplify right side
    20,719.21x = 478,972,658.25
  5. Step 5: Solve for x
    x = 478,972,658.25/20,719.21
  6. Step 6: Final answer
    x = 23,117.33

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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.