Home / 19,422.90-26,789.40-12,697.74

Finding the Fourth Proportional to 19,422.90, 26,789.40 and 12,697.74

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Solution

The fourth proportional to 19,422.90, 26,789.40 and 12,697.74 is: 17,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,422.90 : 26,789.40 = 12,697.74 : x
  2. Step 2: Convert to fraction form
    19,422.90/26,789.40 = 12,697.74/x
  3. Step 3: Cross multiply
    19,422.90x = 26,789.40 × 12,697.74
  4. Step 4: Simplify right side
    19,422.90x = 340,164,835.96
  5. Step 5: Solve for x
    x = 340,164,835.96/19,422.90
  6. Step 6: Final answer
    x = 17,513.60

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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.