Home / 12,455.47-18,683.70-4,960.45

Finding the Fourth Proportional to 12,455.47, 18,683.70 and 4,960.45

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Solution

The fourth proportional to 12,455.47, 18,683.70 and 4,960.45 is: 7,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.47 : 18,683.70 = 4,960.45 : x
  2. Step 2: Convert to fraction form
    12,455.47/18,683.70 = 4,960.45/x
  3. Step 3: Cross multiply
    12,455.47x = 18,683.70 × 4,960.45
  4. Step 4: Simplify right side
    12,455.47x = 92,679,559.67
  5. Step 5: Solve for x
    x = 92,679,559.67/12,455.47
  6. Step 6: Final answer
    x = 7,440.87

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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.