Home / 19,431.40-26,814.54-11,476.20

Finding the Fourth Proportional to 19,431.40, 26,814.54 and 11,476.20

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Solution

The fourth proportional to 19,431.40, 26,814.54 and 11,476.20 is: 15,836.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.40 : 26,814.54 = 11,476.20 : x
  2. Step 2: Convert to fraction form
    19,431.40/26,814.54 = 11,476.20/x
  3. Step 3: Cross multiply
    19,431.40x = 26,814.54 × 11,476.20
  4. Step 4: Simplify right side
    19,431.40x = 307,729,023.95
  5. Step 5: Solve for x
    x = 307,729,023.95/19,431.40
  6. Step 6: Final answer
    x = 15,836.69

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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.