Home / 18,726.79-25,853.34-12,767.21

Finding the Fourth Proportional to 18,726.79, 25,853.34 and 12,767.21

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Solution

The fourth proportional to 18,726.79, 25,853.34 and 12,767.21 is: 17,625.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.79 : 25,853.34 = 12,767.21 : x
  2. Step 2: Convert to fraction form
    18,726.79/25,853.34 = 12,767.21/x
  3. Step 3: Cross multiply
    18,726.79x = 25,853.34 × 12,767.21
  4. Step 4: Simplify right side
    18,726.79x = 330,075,020.98
  5. Step 5: Solve for x
    x = 330,075,020.98/18,726.79
  6. Step 6: Final answer
    x = 17,625.82

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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.