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Finding the Fourth Proportional to 18,721,490.90, 26,266,774.30 and 18,721,490.90

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Solution

The fourth proportional to 18,721,490.90, 26,266,774.30 and 18,721,490.90 is: 26,266,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,490.90 : 26,266,774.30 = 18,721,490.90 : x
  2. Step 2: Convert to fraction form
    18,721,490.90/26,266,774.30 = 18,721,490.90/x
  3. Step 3: Cross multiply
    18,721,490.90x = 26,266,774.30 × 18,721,490.90
  4. Step 4: Simplify right side
    18,721,490.90x = 491,753,176,029,803.88
  5. Step 5: Solve for x
    x = 491,753,176,029,803.88/18,721,490.90
  6. Step 6: Final answer
    x = 26,266,774.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.