Home / 18,639.90-25,721.55-10,682.82

Finding the Fourth Proportional to 18,639.90, 25,721.55 and 10,682.82

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Solution

The fourth proportional to 18,639.90, 25,721.55 and 10,682.82 is: 14,741.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.90 : 25,721.55 = 10,682.82 : x
  2. Step 2: Convert to fraction form
    18,639.90/25,721.55 = 10,682.82/x
  3. Step 3: Cross multiply
    18,639.90x = 25,721.55 × 10,682.82
  4. Step 4: Simplify right side
    18,639.90x = 274,778,688.77
  5. Step 5: Solve for x
    x = 274,778,688.77/18,639.90
  6. Step 6: Final answer
    x = 14,741.43

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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.