Home / 15,861.24-21,884.46-9,895.80

Finding the Fourth Proportional to 15,861.24, 21,884.46 and 9,895.80

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Solution

The fourth proportional to 15,861.24, 21,884.46 and 9,895.80 is: 13,653.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.24 : 21,884.46 = 9,895.80 : x
  2. Step 2: Convert to fraction form
    15,861.24/21,884.46 = 9,895.80/x
  3. Step 3: Cross multiply
    15,861.24x = 21,884.46 × 9,895.80
  4. Step 4: Simplify right side
    15,861.24x = 216,564,239.27
  5. Step 5: Solve for x
    x = 216,564,239.27/15,861.24
  6. Step 6: Final answer
    x = 13,653.68

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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.