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Finding the Fourth Proportional to 12,401.47, 18,603.93 and 6,558.49

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Solution

The fourth proportional to 12,401.47, 18,603.93 and 6,558.49 is: 9,838.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,401.47 : 18,603.93 = 6,558.49 : x
  2. Step 2: Convert to fraction form
    12,401.47/18,603.93 = 6,558.49/x
  3. Step 3: Cross multiply
    12,401.47x = 18,603.93 × 6,558.49
  4. Step 4: Simplify right side
    12,401.47x = 122,013,688.87
  5. Step 5: Solve for x
    x = 122,013,688.87/12,401.47
  6. Step 6: Final answer
    x = 9,838.65

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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.