Home / 18,639-25,721.82-10,256.04

Finding the Fourth Proportional to 18,639, 25,721.82 and 10,256.04

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Solution

The fourth proportional to 18,639, 25,721.82 and 10,256.04 is: 14,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639 : 25,721.82 = 10,256.04 : x
  2. Step 2: Convert to fraction form
    18,639/25,721.82 = 10,256.04/x
  3. Step 3: Cross multiply
    18,639x = 25,721.82 × 10,256.04
  4. Step 4: Simplify right side
    18,639x = 263,804,014.79
  5. Step 5: Solve for x
    x = 263,804,014.79/18,639
  6. Step 6: Final answer
    x = 14,153.34

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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.