Home / 28,645.61-39,530.81-15,898.95

Finding the Fourth Proportional to 28,645.61, 39,530.81 and 15,898.95

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Solution

The fourth proportional to 28,645.61, 39,530.81 and 15,898.95 is: 21,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.61 : 39,530.81 = 15,898.95 : x
  2. Step 2: Convert to fraction form
    28,645.61/39,530.81 = 15,898.95/x
  3. Step 3: Cross multiply
    28,645.61x = 39,530.81 × 15,898.95
  4. Step 4: Simplify right side
    28,645.61x = 628,498,233.08
  5. Step 5: Solve for x
    x = 628,498,233.08/28,645.61
  6. Step 6: Final answer
    x = 21,940.47

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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.