Home / 13,969.18-20,953.14-4,108.78

Finding the Fourth Proportional to 13,969.18, 20,953.14 and 4,108.78

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Solution

The fourth proportional to 13,969.18, 20,953.14 and 4,108.78 is: 6,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.18 : 20,953.14 = 4,108.78 : x
  2. Step 2: Convert to fraction form
    13,969.18/20,953.14 = 4,108.78/x
  3. Step 3: Cross multiply
    13,969.18x = 20,953.14 × 4,108.78
  4. Step 4: Simplify right side
    13,969.18x = 86,091,842.57
  5. Step 5: Solve for x
    x = 86,091,842.57/13,969.18
  6. Step 6: Final answer
    x = 6,162.98

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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.