Home / 28,366.14-39,143.74-15,616.84

Finding the Fourth Proportional to 28,366.14, 39,143.74 and 15,616.84

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Solution

The fourth proportional to 28,366.14, 39,143.74 and 15,616.84 is: 21,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.14 : 39,143.74 = 15,616.84 : x
  2. Step 2: Convert to fraction form
    28,366.14/39,143.74 = 15,616.84/x
  3. Step 3: Cross multiply
    28,366.14x = 39,143.74 × 15,616.84
  4. Step 4: Simplify right side
    28,366.14x = 611,301,524.58
  5. Step 5: Solve for x
    x = 611,301,524.58/28,366.14
  6. Step 6: Final answer
    x = 21,550.40

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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.