Home / 20,661.60-30,904.86-14,013.12

Finding the Fourth Proportional to 20,661.60, 30,904.86 and 14,013.12

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Solution

The fourth proportional to 20,661.60, 30,904.86 and 14,013.12 is: 20,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.60 : 30,904.86 = 14,013.12 : x
  2. Step 2: Convert to fraction form
    20,661.60/30,904.86 = 14,013.12/x
  3. Step 3: Cross multiply
    20,661.60x = 30,904.86 × 14,013.12
  4. Step 4: Simplify right side
    20,661.60x = 433,073,511.76
  5. Step 5: Solve for x
    x = 433,073,511.76/20,661.60
  6. Step 6: Final answer
    x = 20,960.31

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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.