Home / 21,898.86-30,220.42-11,827.31

Finding the Fourth Proportional to 21,898.86, 30,220.42 and 11,827.31

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Solution

The fourth proportional to 21,898.86, 30,220.42 and 11,827.31 is: 16,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.86 : 30,220.42 = 11,827.31 : x
  2. Step 2: Convert to fraction form
    21,898.86/30,220.42 = 11,827.31/x
  3. Step 3: Cross multiply
    21,898.86x = 30,220.42 × 11,827.31
  4. Step 4: Simplify right side
    21,898.86x = 357,426,065.43
  5. Step 5: Solve for x
    x = 357,426,065.43/21,898.86
  6. Step 6: Final answer
    x = 16,321.67

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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.