Home / 21,904.70-30,226.85-13,403.35

Finding the Fourth Proportional to 21,904.70, 30,226.85 and 13,403.35

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Solution

The fourth proportional to 21,904.70, 30,226.85 and 13,403.35 is: 18,495.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.70 : 30,226.85 = 13,403.35 : x
  2. Step 2: Convert to fraction form
    21,904.70/30,226.85 = 13,403.35/x
  3. Step 3: Cross multiply
    21,904.70x = 30,226.85 × 13,403.35
  4. Step 4: Simplify right side
    21,904.70x = 405,140,948.27
  5. Step 5: Solve for x
    x = 405,140,948.27/21,904.70
  6. Step 6: Final answer
    x = 18,495.61

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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.