Home / 13,424.75-20,140.70-4,659.65

Finding the Fourth Proportional to 13,424.75, 20,140.70 and 4,659.65

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Solution

The fourth proportional to 13,424.75, 20,140.70 and 4,659.65 is: 6,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.75 : 20,140.70 = 4,659.65 : x
  2. Step 2: Convert to fraction form
    13,424.75/20,140.70 = 4,659.65/x
  3. Step 3: Cross multiply
    13,424.75x = 20,140.70 × 4,659.65
  4. Step 4: Simplify right side
    13,424.75x = 93,848,612.76
  5. Step 5: Solve for x
    x = 93,848,612.76/13,424.75
  6. Step 6: Final answer
    x = 6,990.72

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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.