Home / 19,965.68-27,561.49-12,895.55

Finding the Fourth Proportional to 19,965.68, 27,561.49 and 12,895.55

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Solution

The fourth proportional to 19,965.68, 27,561.49 and 12,895.55 is: 17,801.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.68 : 27,561.49 = 12,895.55 : x
  2. Step 2: Convert to fraction form
    19,965.68/27,561.49 = 12,895.55/x
  3. Step 3: Cross multiply
    19,965.68x = 27,561.49 × 12,895.55
  4. Step 4: Simplify right side
    19,965.68x = 355,420,402.32
  5. Step 5: Solve for x
    x = 355,420,402.32/19,965.68
  6. Step 6: Final answer
    x = 17,801.57

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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.