Home / 18,685.11-25,784.28-10,721.73

Finding the Fourth Proportional to 18,685.11, 25,784.28 and 10,721.73

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Solution

The fourth proportional to 18,685.11, 25,784.28 and 10,721.73 is: 14,795.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.11 : 25,784.28 = 10,721.73 : x
  2. Step 2: Convert to fraction form
    18,685.11/25,784.28 = 10,721.73/x
  3. Step 3: Cross multiply
    18,685.11x = 25,784.28 × 10,721.73
  4. Step 4: Simplify right side
    18,685.11x = 276,452,088.40
  5. Step 5: Solve for x
    x = 276,452,088.40/18,685.11
  6. Step 6: Final answer
    x = 14,795.32

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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.