Home / 20,653.80-30,981.89-5,861.57

Finding the Fourth Proportional to 20,653.80, 30,981.89 and 5,861.57

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Solution

The fourth proportional to 20,653.80, 30,981.89 and 5,861.57 is: 8,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.80 : 30,981.89 = 5,861.57 : x
  2. Step 2: Convert to fraction form
    20,653.80/30,981.89 = 5,861.57/x
  3. Step 3: Cross multiply
    20,653.80x = 30,981.89 × 5,861.57
  4. Step 4: Simplify right side
    20,653.80x = 181,602,332.75
  5. Step 5: Solve for x
    x = 181,602,332.75/20,653.80
  6. Step 6: Final answer
    x = 8,792.68

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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.