Home / 18,721,438.96-28,092,520.68-9,136,896.88

Finding the Fourth Proportional to 18,721,438.96, 28,092,520.68 and 9,136,896.88

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Solution

The fourth proportional to 18,721,438.96, 28,092,520.68 and 9,136,896.88 is: 13,710,402.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,438.96 : 28,092,520.68 = 9,136,896.88 : x
  2. Step 2: Convert to fraction form
    18,721,438.96/28,092,520.68 = 9,136,896.88/x
  3. Step 3: Cross multiply
    18,721,438.96x = 28,092,520.68 × 9,136,896.88
  4. Step 4: Simplify right side
    18,721,438.96x = 256,678,464,552,427.50
  5. Step 5: Solve for x
    x = 256,678,464,552,427.50/18,721,438.96
  6. Step 6: Final answer
    x = 13,710,402.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.