Home / 12,391.35-18,572.98-6,143.55

Finding the Fourth Proportional to 12,391.35, 18,572.98 and 6,143.55

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Solution

The fourth proportional to 12,391.35, 18,572.98 and 6,143.55 is: 9,208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.35 : 18,572.98 = 6,143.55 : x
  2. Step 2: Convert to fraction form
    12,391.35/18,572.98 = 6,143.55/x
  3. Step 3: Cross multiply
    12,391.35x = 18,572.98 × 6,143.55
  4. Step 4: Simplify right side
    12,391.35x = 114,104,031.28
  5. Step 5: Solve for x
    x = 114,104,031.28/12,391.35
  6. Step 6: Final answer
    x = 9,208.36

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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.