Home / 15,436.80-21,317.85-10,668.96

Finding the Fourth Proportional to 15,436.80, 21,317.85 and 10,668.96

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Solution

The fourth proportional to 15,436.80, 21,317.85 and 10,668.96 is: 14,733.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.80 : 21,317.85 = 10,668.96 : x
  2. Step 2: Convert to fraction form
    15,436.80/21,317.85 = 10,668.96/x
  3. Step 3: Cross multiply
    15,436.80x = 21,317.85 × 10,668.96
  4. Step 4: Simplify right side
    15,436.80x = 227,439,288.94
  5. Step 5: Solve for x
    x = 227,439,288.94/15,436.80
  6. Step 6: Final answer
    x = 14,733.58

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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.