Home / 18,886.50-28,334.81-16,820.66

Finding the Fourth Proportional to 18,886.50, 28,334.81 and 16,820.66

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Solution

The fourth proportional to 18,886.50, 28,334.81 and 16,820.66 is: 25,235.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.50 : 28,334.81 = 16,820.66 : x
  2. Step 2: Convert to fraction form
    18,886.50/28,334.81 = 16,820.66/x
  3. Step 3: Cross multiply
    18,886.50x = 28,334.81 × 16,820.66
  4. Step 4: Simplify right side
    18,886.50x = 476,610,318.06
  5. Step 5: Solve for x
    x = 476,610,318.06/18,886.50
  6. Step 6: Final answer
    x = 25,235.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.