Home / 13,590.97-18,726.78-12,655.96

Finding the Fourth Proportional to 13,590.97, 18,726.78 and 12,655.96

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Solution

The fourth proportional to 13,590.97, 18,726.78 and 12,655.96 is: 17,438.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.97 : 18,726.78 = 12,655.96 : x
  2. Step 2: Convert to fraction form
    13,590.97/18,726.78 = 12,655.96/x
  3. Step 3: Cross multiply
    13,590.97x = 18,726.78 × 12,655.96
  4. Step 4: Simplify right side
    13,590.97x = 237,005,378.61
  5. Step 5: Solve for x
    x = 237,005,378.61/13,590.97
  6. Step 6: Final answer
    x = 17,438.44

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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.