Home / 28,665,724-39,558,699.60-15,788,668

Finding the Fourth Proportional to 28,665,724, 39,558,699.60 and 15,788,668

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Solution

The fourth proportional to 28,665,724, 39,558,699.60 and 15,788,668 is: 21,788,362.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665,724 : 39,558,699.60 = 15,788,668 : x
  2. Step 2: Convert to fraction form
    28,665,724/39,558,699.60 = 15,788,668/x
  3. Step 3: Cross multiply
    28,665,724x = 39,558,699.60 × 15,788,668
  4. Step 4: Simplify right side
    28,665,724x = 624,579,174,496,132.88
  5. Step 5: Solve for x
    x = 624,579,174,496,132.88/28,665,724
  6. Step 6: Final answer
    x = 21,788,362.10

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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.