Home / 19,965.90-27,561.79-12,895.77

Finding the Fourth Proportional to 19,965.90, 27,561.79 and 12,895.77

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Solution

The fourth proportional to 19,965.90, 27,561.79 and 12,895.77 is: 17,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.90 : 27,561.79 = 12,895.77 : x
  2. Step 2: Convert to fraction form
    19,965.90/27,561.79 = 12,895.77/x
  3. Step 3: Cross multiply
    19,965.90x = 27,561.79 × 12,895.77
  4. Step 4: Simplify right side
    19,965.90x = 355,430,366.82
  5. Step 5: Solve for x
    x = 355,430,366.82/19,965.90
  6. Step 6: Final answer
    x = 17,801.87

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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.