Home / 18,638.52-25,721.64-10,141.20

Finding the Fourth Proportional to 18,638.52, 25,721.64 and 10,141.20

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Solution

The fourth proportional to 18,638.52, 25,721.64 and 10,141.20 is: 13,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.52 : 25,721.64 = 10,141.20 : x
  2. Step 2: Convert to fraction form
    18,638.52/25,721.64 = 10,141.20/x
  3. Step 3: Cross multiply
    18,638.52x = 25,721.64 × 10,141.20
  4. Step 4: Simplify right side
    18,638.52x = 260,848,295.57
  5. Step 5: Solve for x
    x = 260,848,295.57/18,638.52
  6. Step 6: Final answer
    x = 13,995.12

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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.