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Finding the Fourth Proportional to 21,773.88, 29,980.91 and 19,069.52

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Solution

The fourth proportional to 21,773.88, 29,980.91 and 19,069.52 is: 26,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,773.88 : 29,980.91 = 19,069.52 : x
  2. Step 2: Convert to fraction form
    21,773.88/29,980.91 = 19,069.52/x
  3. Step 3: Cross multiply
    21,773.88x = 29,980.91 × 19,069.52
  4. Step 4: Simplify right side
    21,773.88x = 571,721,460.63
  5. Step 5: Solve for x
    x = 571,721,460.63/21,773.88
  6. Step 6: Final answer
    x = 26,257.22

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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.