Home / 20,901.18-31,431.33-16,693.86

Finding the Fourth Proportional to 20,901.18, 31,431.33 and 16,693.86

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Solution

The fourth proportional to 20,901.18, 31,431.33 and 16,693.86 is: 25,104.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.18 : 31,431.33 = 16,693.86 : x
  2. Step 2: Convert to fraction form
    20,901.18/31,431.33 = 16,693.86/x
  3. Step 3: Cross multiply
    20,901.18x = 31,431.33 × 16,693.86
  4. Step 4: Simplify right side
    20,901.18x = 524,710,222.63
  5. Step 5: Solve for x
    x = 524,710,222.63/20,901.18
  6. Step 6: Final answer
    x = 25,104.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.