Home / 13,923.10-19,185.60-12,938.92

Finding the Fourth Proportional to 13,923.10, 19,185.60 and 12,938.92

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Solution

The fourth proportional to 13,923.10, 19,185.60 and 12,938.92 is: 17,829.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.10 : 19,185.60 = 12,938.92 : x
  2. Step 2: Convert to fraction form
    13,923.10/19,185.60 = 12,938.92/x
  3. Step 3: Cross multiply
    13,923.10x = 19,185.60 × 12,938.92
  4. Step 4: Simplify right side
    13,923.10x = 248,240,943.55
  5. Step 5: Solve for x
    x = 248,240,943.55/13,923.10
  6. Step 6: Final answer
    x = 17,829.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.