Home / 13,725.60-18,939.84-10,142.46

Finding the Fourth Proportional to 13,725.60, 18,939.84 and 10,142.46

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Solution

The fourth proportional to 13,725.60, 18,939.84 and 10,142.46 is: 13,995.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.60 : 18,939.84 = 10,142.46 : x
  2. Step 2: Convert to fraction form
    13,725.60/18,939.84 = 10,142.46/x
  3. Step 3: Cross multiply
    13,725.60x = 18,939.84 × 10,142.46
  4. Step 4: Simplify right side
    13,725.60x = 192,096,569.61
  5. Step 5: Solve for x
    x = 192,096,569.61/13,725.60
  6. Step 6: Final answer
    x = 13,995.50

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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.