Home / 18,211.28-25,133.98-10,255.04

Finding the Fourth Proportional to 18,211.28, 25,133.98 and 10,255.04

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Solution

The fourth proportional to 18,211.28, 25,133.98 and 10,255.04 is: 14,153.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.28 : 25,133.98 = 10,255.04 : x
  2. Step 2: Convert to fraction form
    18,211.28/25,133.98 = 10,255.04/x
  3. Step 3: Cross multiply
    18,211.28x = 25,133.98 × 10,255.04
  4. Step 4: Simplify right side
    18,211.28x = 257,749,970.26
  5. Step 5: Solve for x
    x = 257,749,970.26/18,211.28
  6. Step 6: Final answer
    x = 14,153.31

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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.