Home / 18,686.38-28,036.86-10,784.73

Finding the Fourth Proportional to 18,686.38, 28,036.86 and 10,784.73

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Solution

The fourth proportional to 18,686.38, 28,036.86 and 10,784.73 is: 16,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.38 : 28,036.86 = 10,784.73 : x
  2. Step 2: Convert to fraction form
    18,686.38/28,036.86 = 10,784.73/x
  3. Step 3: Cross multiply
    18,686.38x = 28,036.86 × 10,784.73
  4. Step 4: Simplify right side
    18,686.38x = 302,369,965.15
  5. Step 5: Solve for x
    x = 302,369,965.15/18,686.38
  6. Step 6: Final answer
    x = 16,181.30

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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.