Home / 19,486.40-26,891.31-12,319.45

Finding the Fourth Proportional to 19,486.40, 26,891.31 and 12,319.45

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Solution

The fourth proportional to 19,486.40, 26,891.31 and 12,319.45 is: 17,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,486.40 : 26,891.31 = 12,319.45 : x
  2. Step 2: Convert to fraction form
    19,486.40/26,891.31 = 12,319.45/x
  3. Step 3: Cross multiply
    19,486.40x = 26,891.31 × 12,319.45
  4. Step 4: Simplify right side
    19,486.40x = 331,286,273.72
  5. Step 5: Solve for x
    x = 331,286,273.72/19,486.40
  6. Step 6: Final answer
    x = 17,000.90

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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.