Home / 18,965.08-28,455.82-7,275.56

Finding the Fourth Proportional to 18,965.08, 28,455.82 and 7,275.56

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Solution

The fourth proportional to 18,965.08, 28,455.82 and 7,275.56 is: 10,916.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.08 : 28,455.82 = 7,275.56 : x
  2. Step 2: Convert to fraction form
    18,965.08/28,455.82 = 7,275.56/x
  3. Step 3: Cross multiply
    18,965.08x = 28,455.82 × 7,275.56
  4. Step 4: Simplify right side
    18,965.08x = 207,032,078.71
  5. Step 5: Solve for x
    x = 207,032,078.71/18,965.08
  6. Step 6: Final answer
    x = 10,916.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.