Home / 28,627.78-39,509.85-18,017.86

Finding the Fourth Proportional to 28,627.78, 39,509.85 and 18,017.86

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Solution

The fourth proportional to 28,627.78, 39,509.85 and 18,017.86 is: 24,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,627.78 : 39,509.85 = 18,017.86 : x
  2. Step 2: Convert to fraction form
    28,627.78/39,509.85 = 18,017.86/x
  3. Step 3: Cross multiply
    28,627.78x = 39,509.85 × 18,017.86
  4. Step 4: Simplify right side
    28,627.78x = 711,882,945.92
  5. Step 5: Solve for x
    x = 711,882,945.92/28,627.78
  6. Step 6: Final answer
    x = 24,866.86

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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.