Home / 18,951.95-26,164.40-12,589.45

Finding the Fourth Proportional to 18,951.95, 26,164.40 and 12,589.45

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Solution

The fourth proportional to 18,951.95, 26,164.40 and 12,589.45 is: 17,380.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.95 : 26,164.40 = 12,589.45 : x
  2. Step 2: Convert to fraction form
    18,951.95/26,164.40 = 12,589.45/x
  3. Step 3: Cross multiply
    18,951.95x = 26,164.40 × 12,589.45
  4. Step 4: Simplify right side
    18,951.95x = 329,395,405.58
  5. Step 5: Solve for x
    x = 329,395,405.58/18,951.95
  6. Step 6: Final answer
    x = 17,380.55

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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.