Home / 15,365.94-21,205.40-8,651.82

Finding the Fourth Proportional to 15,365.94, 21,205.40 and 8,651.82

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Solution

The fourth proportional to 15,365.94, 21,205.40 and 8,651.82 is: 11,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.94 : 21,205.40 = 8,651.82 : x
  2. Step 2: Convert to fraction form
    15,365.94/21,205.40 = 8,651.82/x
  3. Step 3: Cross multiply
    15,365.94x = 21,205.40 × 8,651.82
  4. Step 4: Simplify right side
    15,365.94x = 183,465,260.57
  5. Step 5: Solve for x
    x = 183,465,260.57/15,365.94
  6. Step 6: Final answer
    x = 11,939.74

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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.