Home / 28,211.52-38,933.24-15,636.28

Finding the Fourth Proportional to 28,211.52, 38,933.24 and 15,636.28

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Solution

The fourth proportional to 28,211.52, 38,933.24 and 15,636.28 is: 21,578.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.52 : 38,933.24 = 15,636.28 : x
  2. Step 2: Convert to fraction form
    28,211.52/38,933.24 = 15,636.28/x
  3. Step 3: Cross multiply
    28,211.52x = 38,933.24 × 15,636.28
  4. Step 4: Simplify right side
    28,211.52x = 608,771,041.95
  5. Step 5: Solve for x
    x = 608,771,041.95/28,211.52
  6. Step 6: Final answer
    x = 21,578.81

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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.