Home / 13,423.06-20,140.59-6,845.78

Finding the Fourth Proportional to 13,423.06, 20,140.59 and 6,845.78

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Solution

The fourth proportional to 13,423.06, 20,140.59 and 6,845.78 is: 10,271.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.06 : 20,140.59 = 6,845.78 : x
  2. Step 2: Convert to fraction form
    13,423.06/20,140.59 = 6,845.78/x
  3. Step 3: Cross multiply
    13,423.06x = 20,140.59 × 6,845.78
  4. Step 4: Simplify right side
    13,423.06x = 137,878,048.21
  5. Step 5: Solve for x
    x = 137,878,048.21/13,423.06
  6. Step 6: Final answer
    x = 10,271.73

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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.