Home / 18,784.47-28,177.55-10,458.21

Finding the Fourth Proportional to 18,784.47, 28,177.55 and 10,458.21

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Solution

The fourth proportional to 18,784.47, 28,177.55 and 10,458.21 is: 15,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784.47 : 28,177.55 = 10,458.21 : x
  2. Step 2: Convert to fraction form
    18,784.47/28,177.55 = 10,458.21/x
  3. Step 3: Cross multiply
    18,784.47x = 28,177.55 × 10,458.21
  4. Step 4: Simplify right side
    18,784.47x = 294,686,648.86
  5. Step 5: Solve for x
    x = 294,686,648.86/18,784.47
  6. Step 6: Final answer
    x = 15,687.78

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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.