Home / 13,423.75-20,139.20-4,658.65

Finding the Fourth Proportional to 13,423.75, 20,139.20 and 4,658.65

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Solution

The fourth proportional to 13,423.75, 20,139.20 and 4,658.65 is: 6,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.75 : 20,139.20 = 4,658.65 : x
  2. Step 2: Convert to fraction form
    13,423.75/20,139.20 = 4,658.65/x
  3. Step 3: Cross multiply
    13,423.75x = 20,139.20 × 4,658.65
  4. Step 4: Simplify right side
    13,423.75x = 93,821,484.08
  5. Step 5: Solve for x
    x = 93,821,484.08/13,423.75
  6. Step 6: Final answer
    x = 6,989.22

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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.