Home / 27,021.87-40,531.93-12,230.78

Finding the Fourth Proportional to 27,021.87, 40,531.93 and 12,230.78

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Solution

The fourth proportional to 27,021.87, 40,531.93 and 12,230.78 is: 18,345.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,021.87 : 40,531.93 = 12,230.78 : x
  2. Step 2: Convert to fraction form
    27,021.87/40,531.93 = 12,230.78/x
  3. Step 3: Cross multiply
    27,021.87x = 40,531.93 × 12,230.78
  4. Step 4: Simplify right side
    27,021.87x = 495,736,885.57
  5. Step 5: Solve for x
    x = 495,736,885.57/27,021.87
  6. Step 6: Final answer
    x = 18,345.77

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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.